School Directory
| School/Organization | City | State | Country |
|---|---|---|---|
| John F. Kennedy High School | LA PALMA | California | United States |
| John H. Pitman High School | Turlock | California | United States |
| John Muir High School Early College Magnet | Pasadena | California | United States |
| John R. Rogers High School | Spokane | Washington | United States |
| John W North High School | Riverside | California | United States |
| Johnsonville High School | Johnonville | South Carolina | United States |
| Jonas E. Salk Middle School | Levittown | New York | United States |
| Jonesville High School | Jonesville | Michigan | United States |
| Joplin High School | Joplin | Missouri | United States |
| Kalani High School | Honolulu | Hawaii | United States |
| Kamehameha Schools - Maui Campus | Pukalani | Hawaii | United States |
| Kankakee High School | kankakee | Illinois | United States |
| Kankakee Valley High School | Wheatfield | Indiana | United States |
| Katy High School | Katy | Texas | United States |
| Kearney High School | Kearney | Nebraska | United States |
| Keller High School | Keller | Texas | United States |
| Kelly Walsh High School | Casper | Wyoming | United States |
| Kenmore East High School | Tonawanda | New York | United States |
| Kentridge High School | Kent | Washington | United States |
| Kents Hill School | Kents Hill | Maine | United States |
| Kent’s Hill School | Kents Hill | Maine | United States |
| Kewaunee High School | Kewaunee | Wisconsin | United States |
| Keystone Oaks High School | Pittsburgh | Pennsylvania | United States |
| Kimball Union Academy | Meriden | New Hampshire | United States |
| Kimberly High School | Kimberly | Idaho | United States |
| King School | Stamford | Connecticut | United States |
| Kingswood Regional High School | Wolfeboro | New Hampshire | United States |
| Kingwood Park High School | Kingwood | Texas | United States |
| KIPP:DC College Prep | Washington | District of Columbia | United States |
| Klein High School | Spring | Texas | United States |
| Knox Community High School | Knox | Indiana | United States |
| Korey Stringer Institute | Storrs | Connecticut | United States |
| La Costa Canyon High School | Carlsbad | California | United States |
| La Crescent - Hokah Secondary School | La Crescent | Minnesota | United States |
| La Jolla Country Day Schools | La Jolla | California | United States |
| La Quinta High School | Westminster | California | United States |
| La Salle High School | Cincinnati | Ohio | United States |
| La Sierra High School | riverside | California | United States |
| La Vega High School | Waco | Texas | United States |
| Laconia High School | Laconia | New Hampshire | United States |
| Lafayette Central Catholic Jr/Sr High School | Lafayette | Indiana | United States |
| Lafayette High School | Lexington | Kentucky | United States |
| Lafayette High school | Wildwood | Missouri | United States |
| Laguna Beach High School | Laguna Beach | California | United States |
| Lake Central High School | St. John | Indiana | United States |
| Lake Forest Academy | Lake Forest | Illinois | United States |
| Lake Mary High School | Longwood | Florida | United States |
| Lake Orion High School | Lake Orion | Michigan | United States |
| Lake Ridge High School | Mansfield | Texas | United States |
| Lake Station Edison High School | Lake Station | Indiana | United States |
| Lake Washington High School | Kirkland | Washington | United States |
| Lakeside Lutheran High School | Lake Mills | Wisconsin | United States |
| Lakeville North High School | Lakeville | Minnesota | United States |
| Lakewood High School | Lakewood | California | United States |
| Lakewood High School | SAINT PETERSBURG | Florida | United States |
| Lakewood Ranch High School | Bradenton | Florida | United States |
| Lamar High School | Houston | Texas | United States |
| Lamoille Union High School | Hyde PARK | Vermont | United States |
| Lampeter Strasburg School District | Lancaster | Pennsylvania | United States |
| Lancaster Country Day School | Lancaster | Pennsylvania | United States |
| Lancaster Mennonite School | Lancaster | Pennsylvania | United States |
| Langham Creek High School | Houston | Texas | United States |
| Las Lomas High School | Walnut Creek | California | United States |
| Laurel High School | Laurel | Delaware | United States |
| Laurel School | Shaker Heights | Ohio | United States |
| Lawrence Academy | Groton | Massachusetts | United States |
| Lebanon High School | Lebanon | Missouri | United States |
| Lebanon High School (SAU 88) | Lebanon | New Hampshire | United States |
| Lee-Davis High School | Mechanicsville | Virginia | United States |
| Leesburg High School | Leesburg | Florida | United States |
| Lena High School | Lena | Wisconsin | United States |
| Leon High School | Jewett | Texas | United States |
| Leuzinger High School | Lawndale | California | United States |
| Lewiston High School | Lewiston | Idaho | United States |
| Lexington Senior High School/WFBH | Lexington | North Carolina | United States |
| Lexington Christian Academy | Lexington | Kentucky | United States |
| Liberty Christian School | Argyle | Texas | United States |
| Liberty High School | Renton | Washington | United States |
| Liberty Hill Independent School District | Liberty Hill | Texas | United States |
| Licking Valley High School | Newark | Ohio | United States |
| Lincoln Christian School | Tulsa | Oklahoma | United States |
| Lincoln County High School | Stanford | Kentucky | United States |
| Lincoln High School | Tacoma | Washington | United States |
| Lincoln Northeast High School | Lincoln | Nebraska | United States |
| Lincoln School | Providence | Rhode Island | United States |
| Lincoln-Way Central High School | New Lenox | Illinois | United States |
| Lindale High School | Lindale | Texas | United States |
| Lindbergh High School | St Louis | Missouri | United States |
| Lindhurst High School | Olivehurst | California | United States |
| Live Oak High School | Denham Springs | Louisiana | United States |
| Liverpool High School/ Syracuse Orthopedic Specialists | Liverpool | New York | United States |
| Lockland High School | Lockland | Ohio | United States |
| Logan Elm High School | Circleville | Ohio | United States |
| Lompoc High School | Lompoc | California | United States |
| Longmont High School | Longmont | Colorado | United States |
| Loomis Chaffee school | windsor | Connecticut | United States |
| Loris High School/ Middle School | Loris | South Carolina | United States |
| Louisa Muscatine High School | Letts | Iowa | United States |
| Louisville High School | Woodland Hills | California | United States |
| Lovell High School | Lovell | Wyoming | United States |