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- Seattle (Washington) Public Schools 15
- Project Social Studies Curriculum Development Center 14
- Palo Alto (California) Unified School District 13
- Fresno County (California) Schools 10
- Pasadena (California) City Schools 10
- Yolo County (California) Schools 10
- Burbank (California) Unified School District 9
- Philadelphia (Pennsylvania) Public Schools 9
- Kalamazoo (Michigan) Public Schools 7
- Vancouver (Washington) Public Schools 7
- Kern County (California) Superintendent of Schools 6
- Long Beach (California) Unified School District 6
- Los Angeles County (California) Board of Education 6
- Mt. Diablo (California) Unified School District 6
- New York City Board of Education 6
- Oakland (California) Public Schools 6
- Sacramento (California) City Public Schools 6
- Sacramento (California) City Unified School District 6
- San Mateo County (California) Board of Education 6
- California State Department of Education 5