This list of high schools in the state of Connecticut is a sortable table. To sort alphabetically by the subject of each column, click on the triangles in each column heading. A second click reorders the list in reverse alphabetical order by that column. The default order for the list is alphabetically by community name.
School names are listed with the full, official name of the school without beginning articles such as 'the' to allow the below table to be sorted appropriately. Some schools named after people are sometimes known by the last name of the person (such as "O'Brien Tech", for instance Emmett O'Brien Technical High School).
{| class="wikitable sortable"
!| Name (Common Name)
!| Public/Private<br>(Affiliation)
!| Town
!| County
!| Athletic Conference
!| Nickname
!| Notes
|-
| Henry Abbott Technical High School (Abbott Tech) || Connecticut Technical High School System || Danbury || Fairfield County || Connecticut Technical Conference || Wolverines ||
|-
| Academy of Aerospace and Engineering || Capitol Region Education Council || Windsor || Hartford County || Capitol Region Athletic League || Jets ||
|-
| Academy of Computer Science and Engineering || Capitol Region Education Council || Enfield || Hartford County || Capitol Region Athletic League || Eagles ||
|-
| Academy of Information Technology and Engineering || Stamford Public Schools || Stamford || Fairfield County || N/A || Cyber Rams ||
|-
| Academy of Science and Innovation || Capitol Region Education Council || New Britain || Hartford County || Capitol Region Athletic League || Ravens || Grades 6-12
|-
| Academy of the Holy Family || Private (Catholic) || Sprague || New London County || CIAC || Marist Eagles || For girls
|-
| Achievement First Amistad High School || Amistad Academy District || New Haven || New Haven County || Capitol Region Athletic League || Wolves ||
|-
| Amity Regional High School || Regional School District 5 || Woodbridge || New Haven || Southern Connecticut Conference || Spartans || Also serves Bethany and Orange
|-
| Ansonia High School || Ansonia School District || Ansonia|| New Haven County || Naugatuck Valley League || Chargers ||(203) 736-5060
|-
| Avon High School || Avon Public Schools || Avon || Hartford County || Central Connecticut Conference || Falcons ||
|-
| Avon Old Farms || Private (nonsectarian) || Avon || Hartford County || Founders League || Winged Beavers || For boys
|-
| Bacon Academy || Colchester Public Schools || Colchester || New London || Eastern Connecticut Conference || Bobcats ||
|-
| Bassick High School || Bridgeport Public Schools || Bridgeport || Fairfield County || FCIAC || Lions ||
|-
| Berlin High School || Berlin Public Schools || Berlin || Hartford County || Central Connecticut Conference || Redcoats ||
|-
| Bethel High School || Bethel Public Schools || Bethel || Fairfield County || South-West Conference || Wildcats ||
|-
| Bi-Cultural Hebrew Academy of Connecticut || Private (Jewish) || Bridgeport || Fairfield County || N/A || N/A ||
|-
| Bloomfield High School || Bloomfield Public Schools || Bloomfield || Hartford County || Central Connecticut Conference || Warhawks ||
|-
| Bolton High School || Bolton Public Schools || Bolton || Tolland County || North Central Connecticut Conference || Bulldogs ||
|-
| Branford High School || Branford Public Schools || Branford || New Haven County || Southern Connecticut Conference || Hornets ||
|-
| The Bridge Academy Charter School || Charter || Bridgeport || Fairfield County || CIAC || Panthers ||(203) 336-9999
|-
| Bridgeport International Academy || Private (nonsectarian) || Bridgeport || Fairfield County || N/A || N/A ||
|-
| Brien McMahon High School || Norwalk Public Schools || Norwalk || Fairfield County || FCIAC || Senators ||
|-
| Bristol Central High School || Bristol Public Schools || Bristol || Hartford County || Central Connecticut Conference || Rams ||
|-
| Bristol Eastern High School || Bristol Public Schools || Bristol || Hartford County || Central Connecticut Conference || Lancers ||
|-
| Bristol Technical Education Center || Connecticut Technical High School System || Bristol || Hartford County || N/A || N/A || Attending students receive diplomas from their local high schools
|-
| Brookfield High School || Brookfield Public Schools || Brookfield || Fairfield County || South-West Conference || Bobcats ||
|-
| Brunswick School || Private (nonsectarian) || Greenwich || Fairfield County || Fairchester Athletic Association || Bruins ||
|-
| Bulkeley High School || Hartford Public Schools || Hartford || Hartford County || Central Connecticut Conference || Bulldogs ||
|-
| Bullard Havens Technical High School (Bullard Havens Tech) || Connecticut Technical High School System || Bridgeport || Fairfield County || Connecticut Technical Conference || Tigers ||
|-
| Bunnell High School || Stratford Public Schools || Stratford || Fairfield County || South-West Conference || Bulldogs ||
|-
| Canton High School || Canton Public Schools || Canton || Hartford County || North Central Connecticut Conference || Warriors ||
|-
| Canterbury School || Private (Catholic) || New Milford || Litchfield County || NEPSAC || Saints ||
|-
| Capital Preparatory Magnet School (Capital Prep) || Magnet || Hartford || Hartford County || Capitol Region Athletic League || Trailblazers ||
|-
| Cedarhurst School || Private (Therapeutic) || Hamden || New Haven County || N/A || N/A ||7th through 12th grades
|-
| Bridgeport Central High School || Bridgeport Public Schools || Bridgeport || Fairfield County || FCIAC || Hilltoppers ||
|-
| Howell Cheney Technical High School (Cheney Tech) || Connecticut Technical High School System || Manchester || Hartford County || Connecticut Technical Conference || Beavers ||
|-
| Cheshire Academy || Private (nonsectarian) || Cheshire || New Haven County || NEPSAC || Cats ||
|-
| Cheshire High School || Cheshire Public Schools || Cheshire || New Haven County || Southern Connecticut Conference || Rams ||
|-
| Choate Rosemary Hall || Private (nonsectarian) || Wallingford || New Haven County || Founders League || Wild Boars ||
|-
| Christian Heritage School || Private (Christian) || Trumbull || Fairfield County || Housatonic Valley Athletic League || Kingsmen ||
|-
| Classical Magnet School || Hartford Public Schools || Hartford || Hartford County || Capitol Region Athletic League || Gladiators || Grades 6-12
|-
| Coginchaug Regional High School || Regional School District 13 || Durham || Middlesex County ||Shoreline Conference|| Blue Devils || Also serves Middlefield
|-
| Common Ground High School || Charter || New Haven || New Haven County || N/A || Hawks ||
|-
| Conard High School || West Hartford Public Schools || West Hartford || Hartford County || Central Connecticut Conference || Red Wolves ||
|-
| Connecticut International Baccalaureate Academy || Magnet || East Hartford ||Hartford County || N/A || N/A ||
|-
| Connecticut River Academy || Magnet || East Hartford || Hartford County || N/A || Eagles ||
|-
| Cooperative High School || Amistad Academy District || New Haven || New Haven County || N/A || N/A ||
|-
| Crec Academy of International Studies || Capitol Region Education Council || Bloomfield || Hartford County || N/A || N/A || Grades 6-12
|-
| Crosby High School || Waterbury Public Schools || Waterbury || New Haven County || Naugatuck Valley League || Bulldogs ||
|-
| Coventry High School || Coventry Public Schools || Coventry || Tolland County || North Central Connecticut Conference || Patriots ||
|-
| Cromwell High School || Cromwell Public Schools || Cromwell || Middlesex County || Shoreline Conference || Panthers ||
|-
| Danbury High School || Danbury Public Schools || Danbury || Fairfield County || FCIAC || Hatters ||
|-
| Daniel Hand High School || Madison Public Schools || Madison || New Haven County || Southern Connecticut Conference || Tigers ||
|-
| Darien High School || Darien Public Schools || Darien || Fairfield County || FCIAC || Blue Wave ||
|-
| Derby High School || Derby Public Schools || Derby || New Haven County || Naugatuck Valley League || Red Raiders ||
|-
| E.O. Smith High School || Regional School District 19 || Storrs || Tolland County || Central Connecticut Conference || Panthers || serves Ashford, Mansfield and Willington
|-
| East Catholic High School || Private (Catholic) || Manchester || Hartford County || Central Connecticut Conference || Eagles ||
|-
| East Granby High School || East Granby Public Schools || East Granby || Hartford County || North Central Connecticut Conference || Crusaders ||
|-
| East Hampton High School || East Hampton Public Schools || East Hampton || Middlesex County || Shoreline Conference || Bellringers ||
|-
| East Hartford High School || East Hartford Public Schools|| East Hartford || Hartford County || Central Connecticut Conference || Hornets ||
|-
| East Haven High School || East Haven Public Schools|| East Haven || New Haven County || Southern Connecticut Conference || Yellow Jackets ||
|-
| East Lyme High School || East Lyme Public Schools || East Lyme || New London County || Eastern Connecticut Conference || Vikings || Also serves Salem
|-
| East Windsor High School || East Windsor Public Schools|| East Windsor || Hartford County || North Central Connecticut Conference || Panthers ||
|-
| Ellington High School || Ellington Public Schools|| Ellington || Tolland County || North Central Connecticut Conference || Knights ||
|-
| H. H. Ellis Technical High School (Ellis Tech) || Connecticut Technical High School System || Killingly || Windham County || Connecticut Technical Conference || Golden Eagles ||
|-
| Enfield High School || Enfield Public Schools|| Enfield || Hartford County || Central Connecticut Conference || Eagles ||
|-
| Ethel Walker School || Private (nonsectarian) || Simsbury || Hartford County || Founders League || Walkers ||
|-
| Explorations Charter School || Charter || Winsted || Litchfield County || N/A || N/A ||
|-
| Fairfield Ludlowe High School || Fairfield Public Schools || Fairfield || Fairfield County || FCIAC || Falcons ||
|-
| Fairfield College Preparatory School (Fairfield Prep) || Private (Catholic) || Fairfield || Fairfield County || Southern Connecticut Conference || Jesuits ||
|-
| Fairfield Warde High School || Fairfield Public Schools || Fairfield || Fairfield County || FCIAC || Mustangs ||
|-
| Faith Preparatory School || Private (Christian) || New Milford || Litchfield County ||Constitution State Conference|| Bulldogs || Pre-K to Grade 12; nondenominational Christian preparatory school
|-
| Farmington High School || Farmington Public Schools || Farmington || Hartford County || Central Connecticut Conference || River Hawks ||
|-
| Fitch Senior High School || Groton Public Schools || Groton || New London County || Eastern Connecticut Conference || Falcons ||
|-
| Foran High School || Milford Public Schools || Milford || New Haven County || Southern Connecticut Conference || Lions ||
|-
| Forman School || Private (nonsectarian)|| Litchfield || Litchfield County || Housatonic Valley Athletic League || Lions ||
|-
| Franklin Academy || Private (Therapeutic) || East Haddam || Middlesex County || N/A || Phoenix ||
|-
| Gilbert School || Public Endowed || Winsted || Litchfield County || Berkshire League || Yellow Jackets ||
|-
| Glastonbury High School || Glastonbury Public Schools || Glastonbury || Hartford County || Central Connecticut Conference || Guardians ||
|-
| E. C. Goodwin Technical High School (Goodwin Tech)|| Connecticut Technical High School System || New Britain || Hartford County || Connecticut Technical Conference || Gladiators
|-
| Grace S. Webb School || Private (Therapeutic) || Hartford || Hartford County || N/A || N/A ||
|-
| Granby Memorial High School || Granby Public Schools || Granby || Hartford County || North Central Connecticut Conference || Bears ||
|-
| Grasso Southeastern Technical High School (Grasso Tech) || Connecticut Technical High School System || Groton || New London County || Connecticut Technical Conference || Eagles ||
|-
| Greater Hartford Academy of the Arts || Capitol Region Education Council || Hartford || Hartford County || N/A || N/A ||
|-
| Greens Farms Academy || Private (nonsectarian) || Westport || Fairfield County || Fairchester Athletic Association || Dragons ||
|-
| Greenwich Academy || Private (nonsectarian) || Greenwich || Fairfield County || Fairchester Athletic Association || Gators ||
|-
| Greenwich High School || Greenwich Public Schools || Greenwich || Fairfield County || FCIAC || Cardinals ||
|-
| Griswold High School || Griswold Public Schools || Griswold || New London County || Eastern Connecticut Conference || Wolverines ||
|-
| Grove School || Private (nonsectarian) || Madison || New Haven County || Coastal Conference (CT/RI) || Hawks ||
|-
| Guilford High School || Guilford Public Schools || Guilford || New Haven County || Southern Connecticut Conference || Grizzlies ||
|-
| Haddam-Killingworth High School || Regional School District 17 || Haddam || Middlesex County || Shoreline Conference || Cougars || Serves Haddam and Killingworth
|-
| Hall High School || West Hartford Public Schools || West Hartford || Hartford County || Central Connecticut Conference || Titans ||
|-
| Hamden Hall Country Day School || Private (nonsectarian) || Hamden || New Haven County || Fairchester Athletic Association || Hornets ||
|-
| Hamden High School || Hamden Public Schools || Hamden || New Haven County || Southern Connecticut Conference || Green Dragons ||
|-
| Harding High School || Bridgeport Public Schools || Bridgeport || Fairfield County || unknown || Presidents ||
|-
| Hartford Magnet Trinity College Academy || Hartford Public Schools || Hartford || Hartford County || North Central Connecticut Conference || Phoenix ||
|-
| Hartford Public High School || Hartford Public Schools || Hartford || Hartford County || Central Connecticut Conference || Owls ||
|-
| Hill Regional Career Magnet High School || Amistad Academy District || New Haven || New Haven County || Connecticut Technical Conference || Panthers ||
|-
| Hillhouse High School || Amistad Academy District || New Haven || New Haven County || Southern Connecticut Conference || Bulldogs ||
|-
| Holy Cross High School || Private (Catholic) || Waterbury || New Haven County || Naugatuck Valley League || Crusaders ||
|-
| Hopkins School || Private (nonsectarian) || New Haven || New Haven County || Fairchester Athletic Association || Hilltoppers || Grades 7-12
|-
| Hotchkiss School || Private (nonsectarian) || Salisbury || Litchfield County || Founders League || Bearcats ||
|-
| Housatonic Valley Regional High School (Housatonic Regional) || Regional School District 1 || Canaan || Litchfield County || Berkshire League || Mountaineers || Also serves Cornwall, Kent, North Canaan, Salisbury and Sharon.
|-
| Immaculate High School || Roman Catholic Diocese of Bridgeport || Danbury || Fairfield County || South-West Conference || Mustangs ||
|-
| Joel Barlow High School || Regional School District 9 || Redding || Fairfield County || South-West Conference || Falcons || Also serves Easton
|-
| Jonathan Law High School || Milford Public Schools || Milford || New Haven County || Southern Connecticut Conference || Lawmen/Eagles ||
|-
| W.F. Kaynor Technical High School (Kaynor Tech) || Connecticut Technical High School System || Waterbury || New Haven County || Connecticut Technical Conference || Panthers ||
|-
| Kennedy High School || Waterbury Public Schools || Waterbury || New Haven County || Naugatuck Valley League || Eagles ||
|-
| Kent School || Private (nonsectarian) || Kent || Litchfield County || Founders League || Lions ||
|-
| Killingly High School || Killingly Public Schools || Killingly || Windham County || Eastern Connecticut Conference || Redmen ||
|-
| King School || Private (nonsectarian) || Stamford || Fairfield County || Fairchester Athletic Association || Vikings ||
|-
| Kingswood-Oxford School || Private (nonsectarian) || West Hartford || Hartford County || Founders League || Wyverns ||
|-
| Kolbe Cathedral High School || Roman Catholic Diocese of Bridgeport || Bridgeport || Fairfield County || South-West Conference || Cougars ||
|-
| Laurelton Hall || Private (Catholic) || Milford || New Haven County || Southern Connecticut Conference || Crusaders ||
|-
| Ledyard High School || Ledyard Public Schools || Ledyard || New London County || Eastern Connecticut Conference || Colonels ||
|-
| Lewis Mills High School || Regional School District 10 || Burlington || Hartford County || Central Connecticut Conference || Spartans || serving Harwinton and Burlington
|-
| Litchfield High School || Litchfield Public Schools || Litchfield || Litchfield County || Berkshire League || Cowboys || 7th Grade to 12th Grade
|-
| Loomis Chaffee School || Private (nonsectarian) || Windsor || Hartford County || Founders League || Pelicans ||
|-
| Lyman Hall High School || Wallingford Public Schools || Wallingford || New Haven County || Southern Connecticut Conference || Trojans ||
|-
| Lyman Memorial High School || Lebanon School District || Lebanon || New London County || Eastern Connecticut Conference || Bulldogs ||
|-
| Lyme-Old Lyme High School || Lyme-Old Lyme Schools || Old Lyme ||New London County || Shoreline Conference || Wildcats || Serves Lyme and Old Lyme
|-
| Maloney High School || Meriden Board of Education || Meriden || New Haven County || Central Connecticut Conference || Spartans ||
|-
| Manchester High School || Manchester Public Schools || Manchester || Hartford County || Central Connecticut Conference || Red Hawks ||
|-
| Manchester Regional Academy || Manchester Public Schools || Manchester || Hartford County ||N/A ||N/A||
|-
| Marianapolis Preparatory School || Private (Catholic) || Thompson || Windham County || NEPSAC || Knights ||
|-
| Marine Science Magnet High School || Magnet || Groton || New London || N/A || Sharks ||
|-
| Marvelwood School || Private (nonsectarian) || Kent || Litchfield County || Hudson Valley Athletic League (NY/CT)|| Pterodactyls ||
|-
| The Master's School || Private (Christian) || Simsbury || Hartford County || Housatonic Valley Athletic League || Lions ||
|-
| Masuk High School || Monroe Public Schools || Monroe || Fairfield County || South-West Conference || Panthers ||
|-
| Mercy High School || Roman Catholic Diocese of Norwich || Middletown || Middlesex County || Southern Connecticut Conference || Tigers ||
|-
| Metropolitan Learning Center for Global and International Studies || Capitol Region Education Council || Bloomfield || Hartford County || Capitol Region Athletic League || Dragons || Grades 6-12
|-
| Middletown High School || Middletown Public Schools || Middletown || Middlesex County || Central Connecticut Conference || Blue Dragons ||
|-
| Miss Porter's School || Private (nonsectarian) || Farmington || Hartford County || Founders League || Daisys ||
|-
| Montville High School || Montville School District || Montville || New London County || Eastern Connecticut Conference || Wolves ||
|-
| Morgan School || Clinton Public Schools || Clinton || Middlesex County || Shoreline Conference || Huskies ||
|-
| Nathan Hale-Ray High School || East Haddam Public Schools || Moodus || Middlesex County || Shoreline Conference || Noises ||
|-
| Naugatuck High School || Naugatuck Public Schools || Naugatuck || New Haven County || Naugatuck Valley League || Greyhounds ||
|-
| New Britain High School || New Britain Public Schools || New Britain || Hartford County || Central Connecticut Conference || Golden Hurricane ||
|-
| New Canaan High School || New Canaan Public Schools || New Canaan || Fairfield County || FCIAC || Red Rams ||
|-
| New England Jewish Academy || Private (Jewish) || West Hartford || Hartford County || N/A || Eagles ||
|-
| New Fairfield High School || New Fairfield Public Schools || New Fairfield || Fairfield County || South-West Conference || Rebels ||
|-
| New London High School || New London Public Schools || New London || New London County || Eastern Connecticut Conference || Whalers ||
|-
| New Milford High School || New Milford Public Schools || New Milford || Litchfield County || South-West Conference || Green Wave ||
|-
| Newington High School || Newington Public Schools || Newington || Hartford County || Central Connecticut Conference || Nor'easters ||
|-
| Newtown High School || Newtown Public Schools || Newtown || Fairfield County || South-West Conference || Nighthawks ||
|-
| Nonnewaug High School || Regional School District 14 || Woodbury || Litchfield || Berkshire League || Chiefs || Also serves Bethlehem
|-
| North Branford High School || North Branford Public Schools || North Branford || New Haven County || Shoreline Conference || Thunderbirds ||
|-
| North Haven High School || North Haven Public Schools || North Haven || New Haven County || Southern Connecticut Conference || Nighthawks ||
|-
| Northwest Catholic High School || Private (Catholic) || West Hartford || Hartford County || Central Connecticut Conference || Lions ||
|-
| Northwestern Regional High School || Regional School District 7 || Winsted || Litchfield County || Berkshire League || Highlanders ||
|-
| Norwalk High School || Norwalk Public Schools || Norwalk || Fairfield County || FCIAC || Bears ||
|-
| Norwich Free Academy || Public endowed || Norwich || New London County || Eastern Connecticut Conference || Wildcats ||
|-
| Norwich Technical High School (Norwich Tech) || Connecticut Technical High School System || Norwich || New London County || Connecticut Technical Conference || Warriors ||
|-
| Notre Dame Catholic High School (Notre Dame-Fairfield)|| Roman Catholic Diocese of Bridgeport || Fairfield || Fairfield County || South-West Conference || Lancers ||
|-
| Notre Dame High School (Notre Dame-West Haven)|| Private (Catholic) || West Haven || New Haven County || Southern Connecticut Conference || Green Knights ||
|-
| Emmett O'Brien Technical High School (O'Brien Tech) || Connecticut Technical High School System ||Ansonia || New Haven County || Connecticut Technical Conference || Condors ||
|-
| Old Saybrook Senior High School || Old Saybrook Public Schools || Old Saybrook || Middlesex County, Connecticut || Shoreline Conference || Rams ||
|-
| Oxford High School || Oxford Public Schools || Oxford || New Haven County || Naugatuck Valley League || Wolverines ||
|-
| Parish Hill High School || Regional School District 11 || Chaplin || Windham County || Capitol Region Athletic League || Pirates || Also serves Hampton and Scotland; Grades 7 - 12 Grade
|-
| Plainfield High School || Plainfield Public Schools || Central Village in Plainfield || Windham County ||Eastern Connecticut Conference || Panthers ||Also serves Sterling
|-
| Plainville High School || Plainville Public Schools || Plainville || Hartford County || Central Connecticut Conference || Blue Devils ||
|-
| Platt High School || Meriden Board of Education || Meriden || New Haven County || Central Connecticut Conference || Panthers ||
|-
| Platt Technical High School (Platt Tech) || Connecticut Technical High School System || Milford || New Haven County || Connecticut Technical Conference || Panthers ||
|-
| Pomfret School || Private (nonsectarian) || Pomfret || Windham County || NEPSAC || Griffins ||
|-
| Pomperaug Regional High School || Regional School District 15 || Southbury || New Haven County || South-West Conference || Panthers ||
|-
| Portland High School || Portland Public Schools || Portland || Middlesex County || Shoreline Conference || Highlanders ||
|-
| A.I. Prince Technical High School (Prince Tech) || Connecticut Technical High School System || Hartford || Hartford County || Connecticut Technical Conference || Falcons ||
|-
| Putnam High School || Putnam Public Schools || Putnam || Windham County || Eastern Connecticut Conference || Clippers ||
|-
| RHAM High School || Regional School District 8 || Hebron || Tolland County || Central Connecticut Conference || Raptors || Also serves Andover and Marlborough
|-
| Ridgefield High School || Ridgefield School District || Ridgefield || Fairfield County || FCIAC || Tigers ||
|-
| Rockville High School || Rockville Public Schools || Vernon || Tolland County || North Central Connecticut Conference || Rams ||
|-
| Rocky Hill High School || Rocky Hill Public Schools || Rocky Hill || Hartford County || Central Connecticut Conference || Terriers ||
|-
| Sacred Heart Academy || Roman Catholic Archdiocese of Hartford || Hamden || New Haven County || Southern Connecticut Conference || Sharks ||
|-
| Sacred Heart Greenwich || Private (Catholic) || Greenwich || Fairfield County || Fairchester Athletic Association || Tigers ||
|-
| Salisbury School || Private (nonsectarian) || Salisbury || Litchfield County || NEPSAC || Knights ||
|-
| Seymour High School || Seymour Public Schools || Seymour || New Haven County || Naugatuck Valley League || Wildcats ||
|-
| Sheehan High School || Wallingford Public Schools || Wallingford || New Haven County || Southern Connecticut Conference || Titans ||
|-
| Shelton High School || Shelton Public Schools || Shelton || Fairfield County || Southern Connecticut Conference || Gaels ||
|-
| Shepaug Valley High School || Regional School District 12 || Washington || Litchfield County || Berkshire League || Spartans ||
|-
| Simsbury High School || Simsbury Public Schools || Simsbury || Hartford County || Central Connecticut Conference || Trojans ||
|-
| Somers High School || Somers Public Schools || Somers || Tolland County || North Central Connecticut Conference || Spartans ||
|-
| Sound School ||New Haven School District|| New Haven || New Haven County || N/A || N/A ||
|-
| South Kent School || Private (nonsectarian) || Kent || Litchfield County || Housatonic Valley Athletic League || Cardinals ||
|-
| South Windsor High School || South Windsor Public Schools || South Windsor || Hartford County || Central Connecticut Conference || Bobcats ||
|-
| Southington High School || Southington Public Schools || Southington || Hartford || Central Connecticut Conference || Blue Knights ||
|-
| Sport and Medical Sciences Academy || Hartford Public Schools || Hartford || Hartford County || North Central Connecticut Conference || Tigers || Grades 7-12
|-
| St. Bernard High School || Private (Catholic) || Montville || New London County || Eastern Connecticut Conference || Saints ||
|-
| St. Joseph High School || Roman Catholic Diocese of Bridgeport || Trumbull || Fairfield County || FCIAC || Cadets ||
|-
| St. Luke's School || Private (Christian) || New Canaan || Fairfield County || Fairchester Athletic Association || The Storm ||
|-
| St. Thomas More School || Private (Roman Catholic) || Oakdale || New London County || NEPSAC || Chancellors ||
|-
| St. Paul Catholic High School || Roman Catholic Archdiocese of Hartford || Bristol || Hartford County || Naugatuck Valley League || Falcons ||
|-
| Stafford High School || Stafford Public Schools || Stafford Springs || Tolland County || North Central Connecticut Conference || Bulldogs ||
|-
| Stamford High School || Stamford Public Schools || Stamford || Fairfield County || FCIAC || Black Knights ||
|-
| Staples High School || Westport Public Schools || Westport || Fairfield County || FCIAC || Wreckers ||
|-
| Stonington High School || Stonington Public Schools || Stonington || New London County || Eastern Connecticut Conference || Bears ||
|-
| Stratford High School || Stratford Public Schools || Stratford || Fairfield County || South-West Conference || Red Devils ||
|-
| Suffield Academy || Private (nonsectarian) || Suffield || Hartford County || NEPSAC || Tigers ||
|-
| Suffield High School || Suffield Public Schools || Suffield || Hartford County || North Central Connecticut Conference || Wildcats ||
|-
| Taft School || Private (nonsectarian) || Watertown || Litchfield County || Founders League || Rhinos ||
|-
| Terryville High School || Plymouth Public Schools || Plymouth || Litchfield County || Berkshire League || Kangaroos ||
|-
| Thomaston High School || Thomaston Public Schools || Thomaston || Litchfield County || Berkshire League || Golden Bears || Grades 7-12
|-
| Tolland High School || Tolland Public Schools || Tolland || Tolland County || North Central Connecticut Conference || Eagles ||
|-
| Torrington High School || Torrington Public Schools || Torrington || Litchfield County || Naugatuck Valley League || Red Raiders ||
|-
| Tourtellotte Memorial High School || Thompson Public Schools || Thompson || Windham County || Eastern Connecticut Conference || Tigers ||
|-
| Trumbull High School || Trumbull Public Schools || Trumbull || Fairfield County || FCIAC || Eagles ||
|-
| University High School of Science and Engineering || Hartford Public Schools and University of Hartford || Hartford || Hartford County || Capitol Region Athletic League || Hawks ||
|-
| Valley Regional High School || Regional School District 4 || Deep River || Middlesex County || Shoreline Conference || Valley Vs || Also serves Chester and Essex
|-
| Vinal Technical High School || Connecticut Technical High School System || Middletown || Middlesex County || Connecticut Technical Conference || Hawks ||
|-
| Wamogo Regional High School || Regional School District 6 || Litchfield || Litchfield County || Berkshire League || Warriors || 7th Grade to 12th Grade
|-
| Waterbury Arts Magnet School || Waterbury Public Schools || Waterbury || New Haven County || N/A || N/A ||
|-
| Waterford High School || Waterford Public Schools || Waterford || New London County || Eastern Connecticut Conference || Lancers ||
|-
| Watertown High School || Watertown Public Schools || Watertown || Litchfield County || Naugatuck Valley League || Indians ||
|-
| Watkinson School || Private (nonsectarian) || Hartford || Hartford County || Housatonic Valley Athletic League || Rams ||
|-
| Weaver High School || Hartford Public Schools || Hartford || Hartford County || Capitol Region Athletic League || Beavers ||
|-
| West Haven High School || West Haven Public Schools || West Haven || New Haven County || Southern Connecticut Conference || Blue Devils ||
|-
| Westbrook High School || Westbrook Public Schools || Westbrook || Middlesex County || Shoreline Conference || Knights ||
|-
| Westhill High School || Stamford Public Schools || Stamford || Fairfield County || FCIAC || Vikings ||
|-
| Westminster School || Private (nonsectarian) || Simsbury || Hartford County || Founders League || Martlets ||
|-
| Weston High School || Weston Public Schools || Weston || Fairfield County || South-West Conference || Trojans ||
|-
| Westover School || Private (nonsectarian) || Middlebury || New Haven County || NEPSAC || Wildcats || For girls
|-
| Wethersfield High School || Wethersfield Public Schools || Wethersfield || Hartford County || Central Connecticut Conference || Eagles ||
|-
| Wheeler High School || North Stonington School District || North Stonington || New London County || Eastern Connecticut Conference || Lions ||
|-
| Eli Whitney Technical High School (Whitney Tech) || Connecticut Technical High School System || Hamden || New Haven County || Connecticut Technical Conference || Owls ||
|-
| Wilbur Cross High School || Amistad Academy District || New Haven || New Haven County || Southern Connecticut Conference || Governors ||
|-
| Wilby High School || Waterbury Public Schools || Waterbury || New Haven County || Naugatuck Valley League || Wildcats ||
|-
| H.C. Wilcox Technical High School (Wilcox Tech) || Connecticut Technical High School System || Meriden || New Haven County || Connecticut Technical Conference || Wildcats ||
|-
| Williams School || Private (nonsectarian) || New London || New London County || NEPSAC || Blues || 7th Grade to 12th Grade
|-
| Wilton High School || Wilton Public Schools || Wilton || Fairfield County || FCIAC || Warriors ||
|-
| Windham High School || Windham Public Schools || Willimantic || Windham County, Connecticut || Eastern Connecticut Conference || Whippets || Also serves Columbia
|-
| Windham Technical High School || Connecticut Technical High School System || Windham || Windham County || Connecticut Technical Conference || Mighty Tigers ||
|-
| Windsor High School || Windsor Public Schools || Windsor || Hartford County || Central Connecticut Conference || Warriors ||
|-
| Windsor Locks High School || Windsor Locks Public Schools || Windsor Locks || Hartford County || North Central Connecticut Conference || Raiders ||
|-
| Wolcott High School || Wolcott Public Schools || Wolcott || New Haven || Naugatuck Valley League || Eagles ||
|-
| Oliver Wolcott Technical High School (Wolcott Tech) || Connecticut Technical High School System || Torrington || Litchfield County || Connecticut Technical Conference || Wildcats ||
|-
| Woodhall School || Private (nonsectarian) || Bethlehem || Litchfield County || Hudson Valley Athletic League (NY/CT) || The Phoenix ||
|-
| Woodland Regional High School || Regional School District 16 || Beacon Falls || New Haven County || Naugatuck Valley League || Hawks || Also serves Prospect
|-
| Woodstock Academy || Public endowed || Woodstock || Windham County || Eastern Connecticut Conference || Centaurs || Serves Union, Woodstock, Eastford, Pomfret, Brooklyn
|-
| Wooster School || Private (nonsectarian) || Danbury || Fairfield County || Housatonic Valley Athletic League || Generals ||
|-
| J. M. Wright Technical High School (Wright Tech)|| Connecticut Technical High School System || Stamford || Fairfield County || Connecticut Technical Conference || Warriors ||
|-
| Xavier High School || Roman Catholic Diocese of Norwich || Middletown || Middlesex County || Southern Connecticut Conference || Falcons ||
|-
|}
See also
- List of school districts in Connecticut