Registration for Spring 2019 is now closed.
- Academy for Science and Design
- Alvirne High School
- Amesbury High School, Massachusetts
- Bishop Brady High School
- Blue Mountain Union High School, Vermont
- Bow High School
- Brattleboro Union High School, Vermont
- Campbell High School
- Central High School
- Coe-Brown Northwood Academy
- Concord High School
- Danville High School, Vermont
- Dover High School
- Exeter High School
- Fall Mountain Regional High School
- Hollis Brookline High School
- Holy Family Academy
- The Hyde School, Maine
- Londonderry High School
- Lumen Scholar Institute, Utah
- Memorial High School
- Merrimack High School
- Midd-West High School, Pennsylvania
- Milford High School
- Nashua North High School
- Nashua South High School
- Oyster River High School
- Pelham High School
- Pembroke Academy
- The Pittsburgh School
- Portsmouth Christian Academy
- Portsmouth High School
- Raymond High School
- Salem High School
- Sanborn Regional High School
- Seacoast School of Technology
- Souhegan High School
- Spaulding High School
- St. Johnsbury Academy, Vermont
- St. Thomas Aquinas
- Timberlane Regional High School
- West High School
- Windham High School
- Winnacunnet High School