Formed in 1927, California School Employees Association is one of the largest classified school employees labor union in the United States. The firm represents over 200,000 school support staff across California. In public schools and community colleges, its members offer security, food services, office/clerical work, school maintenance/operations, transportation, academic assistance, library, media support and computer services. California School Employees Association is a part of the AFL-CIO, a voluntary federation comprising 56 national and international labor unions.