The American Federation of Teachers (AFT) is the second-largest teachers labor union in America (the largest being the National Education Association). The union was founded in Chicago. John Dewey and Margaret Haley were founders.
About 60 percent of AFT's membership works directly in education, with the remainder of the union's members composed of paraprofessionals and school-related personnel; local, state and federal employees; higher education faculty and staff, and nurses and other healthcare professionals.
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