Student Grade 9-12
| SCHOOLS | SCHOOL TYPE | STUDENT POPULATION | ESL | CITY | STATE / PROVINCE |
|---|---|---|---|---|---|
| Adel Desoto Minburn Community School District | Public High School | Co-educational | Yes | Adel, (Des Moines) | Iowa |
| Admiral Farragut Academy | Boarding School | Co-educational | Yes | St. Petersburg, (Tampa) | Florida |
| Alameda School District | Public High School | Co-educational | No | Alameda, (San Francisco) | California |
| Antelope Valley Christian High School | Boarding School | Co-educational | Yes | Lancaster, (Los Angeles) | California |
| Antelope Valley School District | Public High School | Co-educational | No | Lancaster, (Los Angeles) | California |
| Arlington Catholic High School | Private Day School | Co-educational | No | Arlington, (Boston) | Massachusetts |
| Ashbury College | Boarding School | Co-educational | Yes | Ottawa, (Ottawa) | Ontario |
| Avon Middle-High School | Public High School | Co-educational | No | Avon, (Boston) | Massachusetts |
| Ben Lippen School | Boarding School | Co-educational | Yes | Columbia, (Columbia) | South Carolina |
| Bentley School | Private Day School | Co-educational | No | Lafayette, (San Francisco) | California |
| Beverly High School | Public High School | Co-educational | No | Beverly, (Boston) | Massachusetts |
| Birmingham Community Charter High School | Public High School | Co-educational | No | Los Angeles, (Los Angeles) | California |
| Bishop O’Dowd High School | Private Day School | Co-educational | No | Oakland, (San Francisco) | California |
| Bishop Rosecrans High School | Private Day School | Co-educational | Yes | Zanesville, (Columbus) | Ohio |
| Blue Ridge School | Boarding School | All-boys | Yes | St. George, (Richmond) | Virginia |
| Boise City Schools | Public High School | Co-educational | No | Boise, (Boise) | Idaho |
| Brevard School District | Public High School | Co-educational | No | Viera, (Orlando) | Florida |
| Burlington High School | Public High School | Co-educational | No | Burlington, (Davenport) | Iowa |
| Burlington Notre Dame | Private Day School | Co-educational | No | Burlington, (Davenport) | Iowa |
| Burlington Public School | Public High School | Co-educational | No | Burlington, (Boston ) | Massachusetts |
| Burr and Burton Academy | Boarding School | Co-educational | Yes | Manchester | Vermont |
| Capistrano Valley Christian Schools | Private Day School | Co-educational | Yes | San Juan Capistrano, (Los Angeles) | California |
| Charles Wright Academy | Private Day School | Co-educational | No | Tacoma, (Seattle) | Washington |
| Chicago School District | Public High School | Co-educational | No | Chicago, (Chicago) | Illinois |
| Christian Unified Schools | Private Day School | Co-educational | Yes | El Cajon, (San Diego) | California |
| Colorado Springs School | Private Day School | Co-educational | Yes | Colorado Springs, (Denver) | Colorado |
| Denver Christian School | Private Day School | Co-educational | No | Denver, (Denver) | Colorado |
| Denver Public Schools | Public High School | Co-educational | No | Denver, (Denver) | Colorado |
| DePaul Catholic High School | Private Day School | Co-educational | No | Wayne, (New York) | New Jersey |
| DeSales High School | Private Day School | Co-educational | No | Walla Walla, (Seattle) | Washington |
| Desert Christian School | Private Day School | Co-educational | Yes | Lancaster, (Los Angeles) | California |
| Foxcroft Academy | Boarding School | Co-educational | Yes | Dover-Foxcroft, (Portand) | Maine |
| Fryeburg Academy | Boarding School | Co-educational | Yes | Fryeburg, (Portland) | Maine |
| George Stevens Academy | Boarding School | Co-educational | Yes | Blue Hill, (Bangor) | Maine |
| Grand River Academy | Boarding School | All-boys | Yes | Austinburg, (Cleveland) | Ohio |
| Groton-Dunstable Regional School District | Public High School | Co-educational | No | Groton, (Boston ) | Massachusetts |
| High Mowing School | Boarding School | Co-educational | Yes | Wilton, (Manchester) | New Hampshire |
| Holyoke Catholic High School | Private Day School | Co-educational | No | Chicopee, (Boston) | Massachusetts |
| Hopkinton School District | Public High School | Co-educational | No | Hopkinton, (Boston) | Massachusetts |
| Horizons School | Boarding School | Co-educational | No | Atlanta | Georgia |
| Indian River Charter High School | Public High School | Co-educational | No | Viera, (Orlando) | Florida |
| Lake Forest Academy | Private Day School | Co-educational | Yes | Lake Forest, (Chicago) | Illinois |
| Lincoln Academy | Private Day School | Co-educational | Yes | Newcastle, (Portland) | Maine |
| Los Angeles Unified School District | Public High School | Co-educational | No | Los Angeles, (Los Angeles) | California |
| Lowell Whiteman School | Boarding School | Co-educational | No | Steamboat Springs | Colorado |
| Lyndon Institute | Boarding School | Co-educational | Yes | Lyndonville | Vermont |
| Maine Central Institute | Boarding School | Co-educational | Yes | Pittsfield, (Bangor) | Maine |
| Maine School of Science and Math | Boarding School | Co-educational | Yes | Limestone, (Bangor) | Maine |
| Marblehead High School | Public High School | Co-educational | No | Zanesville, (Boston) | Massachusetts |
| Marianapolis Preparatory School | Boarding School | Co-educational | Yes | Thompson, (Boston) | Connecticut |
| Marian High School | Private Day School | Co-educational | Yes | Framingham, (Boston) | Massachusetts |
| The Marvelwood School | Boarding School | Co-educational | Yes | Kent | Connecticut |
| Masconomet Regional High School | Public High School | Co-educational | No | Topsfield, (Boston ) | Massachusetts |
| Matignon High School | Private Day School | Co-educational | Yes | Cambridge, (Boston) | Massachusetts |
| Mercersburg Academy | Boarding School | Co-educational | Yes | Mercersburg | Pennsylvania |
| Mercy High School | Private Day School | All-girls | No | San Francisco | California |
| Mesa Public Schools | Public High School | Co-educational | No | Mesa, (Phoenix) | Arizona |
| Miss Hall’s School | Boarding School | All-girls | Yes | Pittsfield | Massachusetts |
| Missouri Military Academy | Boarding School | All-boys | Yes | Mexico, (Kansas City) | Missouri |
| Mohawk Trail Regional High School | Public High School | Co-educational | No | Shelburne Falls, (Boston ) | Massachusetts |
| Morgan Hill Unified School District | Public High School | Co-educational | No | Morgan Hill, (San Francisco) | California |
| Natick High School | Public High School | Co-educational | No | Natick, (Boston ) | Massachusetts |
| Nauset Regional High School | Public High School | Co-educational | No | North Eastham, (Boston ) | Massachusetts |
| The Newman School | Private Day School | Co-educational | Yes | Boston | Massachusetts |
| Noble and Greenough School | Private Day School | Co-educational | No | Dedham, (Boston) | Massachusetts |
| North Brookfield Jr/Sr High School | Public High School | Co-educational | No | North Brookfield, (Boston) | Massachusetts |
| Orono Public High School - University Bridge | Public High School | Co-educational | Yes | Bangor, (Bangor) | Maine |
| Paradise Valley School District | Public High School | Co-educational | No | Phoenix | Arizona |
| Pope John XXIII High School | Boarding School | Co-educational | Yes | Everett, (Boston) | Massachusetts |
| Ribét Academy College Prep School | Boarding School | Co-educational | Yes | Los Angeles | California |
| Saint Paul Lutheran High School | Boarding School | Co-educational | No | Concordia, (Kansas City) | Missouri |
| Saugus Public School | Public High School | Co-educational | No | Saugus, (Boston) | Massachusetts |
| Scottsdale Unified School District | Public High School | Co-educational | No | Scottsdale, (Scottsdale) | Arizona |
| Shawnee Mission School District | Public High School | Co-educational | Yes | Overland Park, (Kansas City) | Kansas |
| St. Andrew’s-Sewanee School | Boarding School | Co-educational | Yes | Sewanee | Tennessee |
| St. Johnsbury Academy | Boarding School | Co-educational | Yes | St. Johnsbury | Vermont |
| St. Mary’s Ryken High School | Private Day School | Co-educational | Yes | Leonardtown, (Washington D.C.) | Maryland |
| Tacoma School District | Public High School | Co-educational | No | Tacoma, (Seattle) | Washington |
| Tallulah Falls School | Boarding School | Co-educational | Yes | Tallulah Falls, (Atlanta) | Georgia |
| Trinity Catholic High School | Private Day School | Co-educational | No | Newton, (Boston) | Massachusetts |
| Trivium School | Private Day School | Co-educational | No | Lancaster, (Boston) | Massachusetts |
| Urbandale High School | Public High School | Co-educational | No | Urbandale, (Omaha) | Iowa |
| Ursuline High School | Private Day School | Co-educational | No | Youngstown, (Cleveland) | Ohio |
| Verde Valley High School | Boarding School | Co-educational | Yes | Sedona, (Phoenix) | Arizona |
| Waldorf High School of Massachusetts Bay | Private Day School | Co-educational | No | Belmont, (Boston) | Massachusetts |
| Walnut Hill School for the Arts | Boarding School | Co-educational | Yes | Natick, (Boston) | Massachusetts |
| Wilbraham & Monson Academy | Boarding School | Co-educational | Yes | Wilbraham | Massachusetts |
| Woodstock Academy | Boarding School | Co-educational | Yes | Woodstock, (Boston) | Connecticut |