Participating Districts
- Atlanta Public Schools
- Austin Independent School District
- Baltimore City Public School System [new in 2008]
- Boston Public Schools
- Charlotte-Mecklenburg Schools [new in 2008]
- Chicago Public Schools
- Columbus City Schools
- Denver Public Schools
- District of Columbia Public Schools [new in 2008]
- Houston Independent School District [new in 2008]
- Los Angeles Unified Schools District
- Memphis City Schools
- Milwaukee Public Schools [new in 2008]
- New York City Department of Education
- Pittsburgh Public Schools [new in 2008]
- Portland Public Schools
- Prince Georges County Public Schools [new in 2008]
- San Diego Unified School District
- San Francisco Unified School District [new in 2008]
- Seattle Public Schools [new in 2008]
- Spokane Public Schools