| Name | City | St. | Country | Clubs | Update | Map |
| Adena High School | Frankfort | Ohio | | | 01-01-2002 |  |
| Adirondack Christian School | Wilmington | New York | | | 01-01-2002 | |
| Adirondack Community College | Queensbury | New York | | | 01-02-2001 | |
| Adirondack HS | Boonville | New York | | | 01-01-2002 | |
| Adlai E Stevenson High School | Lincolnshire | Illinois | | | 01-01-2002 | |
| Adlai E. Stevenson HS | Bronx | New York | | | 01-01-2002 | |
| Adlai Stevenson High School | Sterling Heights | Michigan | | | 01-01-2002 | |
| Admiral Farragut Academy | St Petersburg | Florida | | | 01-01-2002 | |
| Admiral King High School | Lorain | Ohio | | | 01-01-2002 | |
| Adna Middle/high School | Adna | Washington | | | 01-01-2002 | |
| Adolfina Irizarry | Toa Baja | PR | | | 01-01-2002 | |
| Adolph Schreiber Hebrew Acad | Monsey | New York | | | 01-01-2002 | |
| Adrian College | Adrian | Michigan | | | 01-02-2001 | |
| Adrian High School | Adrian | Michigan | | | 01-01-2002 | |
| Advance Technologies Academy | Las Vegas | Nevada | | | 01-01-2002 | |
| Advanced Christian Training Sc | Paso Robles | California | | | 01-01-2002 | |
| Advantage Preparatory Schools | Santa Clarita | California | | | 01-01-2002 | |
| Advent Episcopal Day School | Birmingham | Alabama | | | 01-01-2002 | |
| Advent Lutheran Early Childhoo | Boca Raton | Florida | | | 01-01-2002 | |
| Advent Lutheran School | Boca Raton | Florida | | | 01-01-2002 | |
