PDExpress is used by K-12 Schools and Institutes of Higher Learning in 27 states:
- Alabama
- Arizona
- Arkansas
- California
- Colorado
- Florida
- Georgia
- Indiana
- Kentucky
- Maine
- Massachusetts
- Minnesota
- Mississippi
- Missouri
- New Hampshire
- New Jersey
- New Mexico
- New York
- Ohio
- Pennsylvania
- South Carolina
- Tennessee
- Texas
- Utah
- Virginia
- West Virginia
- Wisconsin