• 3 Education
• 2 Collective bargaining
• 2 Societies, etc
• 2 Teachers
• 1 Northeastern Wisconsin Teachers Association
• 1 Wichita Federation of Teachers
• 1 Wisconsin Federation of Teachers

• 2 American Federation of Teachers
• 2 New York State United Teachers
• 2 Professional Staff Congress/City University of New York
• 2 United Federation of Teachers
• 1 American Federation of Teachers, Massachusetts
• 1 American Federation of Teachers. Local 481 (Newark, N.J.)
• 1 Boston Teachers Union
• 1 Chicago Teachers Union
• 1 Connecticut State Federation of Teachers
• 1 Cook County College Teachers Union, Local 1600
• 1 Council of New Jersey State College Locals
• 1 Detroit Federation of Teachers
• 1 Florida Education Association/United
• 1 Green Bay Education Association
• 1 Guam Federation of Teachers, Local 1581
• 1 Hawaii State Teachers Association
• 1 Hawaii State Teachers Association. Leeward District
• 1 Illinois Federation of Teachers
• 1 Illinois State Federation of Teachers
• 1 Lake County Education Association, Local 3783
• 1 Madison Teachers, Inc
• 1 Milwaukee Teachers' Education Association
• 1 Minnesota Federation of Teachers
• 1 Northeastern Wisconsin Teachers Association
• 1 Rockville Centre Teachers Association

• 8 New York (State)
• 7 Wisconsin
• 3 Illinois
• 3 New York
• 2 Florida
• 2 Green Bay
• 2 Hawaii
• 2 Massachusetts
• 2 New Jersey
• 1 Boston
• 1 Chicago
• 1 Connecticut
• 1 Cook County
• 1 Detroit
• 1 Guam
• 1 Kansas
• 1 Lake County
• 1 Lake Ronkonkoma
• 1 Madison
• 1 Miami-Dade County
• 1 Michigan
• 1 Milwaukee
• 1 Minnesota
• 1 Newark
• 1 Oahu

Limit year range