| Bangor High School |
| Belfast Area High School |
| Biddeford High School |
| Boothbay Region High School |
| Calais High School |
| Camden Hills Regional High School |
| Cony High School |
| Edward Little High School |
| Ellsworth High School |
| Houlton High School |
| Lawrence High School |
| Leavitt Area High School |
| Lewiston High School |
| Lincoln Academy |
| Lisbon High School |
| Medomak Valley High School |
| Morse High School |
| Mount Ararat High School |
| Mount Blue High School |
| Mount Desert Island High School |
| Mount View High School |
| Mountain Valley High School |
| Narraguagus Senior High School |
| Nokomis Regional High School |
| Oak Hill High School |
| Oceanside High School |
| Oxford Hills Comprehensive High School |
| Penquis Valley High School |
| Piscataquis Community High School |
| Poland Regional High School |
| Portland High School |
| Presque Isle High School |
| Sacopee Valley High School |
| Skowhegan Area High School |
| Spruce Mountain High School |
| Thornton Academy |
| Westbrook High School |
| Winslow High School |
