| Name |
County |
| Kingston Middle School |
Saint Francois |
| Kipp Endeavor Academy School |
Jackson |
| Kirbyville Middle School |
Taney |
| Knob Noster Middle School |
Johnson |
| La Salle Middle School |
Saint Louis City |
| Ladue Middle School |
Saint Louis |
| Lafayette County Middle School |
Lafayette |
| Lakeview Middle School |
Platte |
| Lamar Middle School |
Barton |
| Langston Middle School |
Saint Louis City |
| Laquey R V Middle School |
Pulaski |
| LaSalle Springs Middle School |
Saint Louis |
| Lathrop Middle School |
Clinton |
| Laura Speed Elliott Middle School |
Cooper |
| Lawson Middle School |
Ray |
| Lebanon Middle School |
Laclede |
| Leeton Middle School |
Johnson |
| Lewis and Clark Middle School |
Cole |
| Lexington Middle School |
Lafayette |
| Liberal Middle School |
Barton |
| Liberty Middle School |
Shannon |
| Liberty Middle School |
Clay |
| Logan - Rogersville Middle School |
Webster |
| Long Middle School |
Saint Louis City |
| Louisiana Middle School |
Pike |
| Louverture Middle School |
Saint Louis City |
| Loyola Academy |
Saint Louis City |
| Macon Middle School |
Macon |
| Mansfield Middle School |
Wright |
| Maple Park Middle School |
Clay |
| Maplewood Richmond Heights Middle School |
Saint Louis |
| Marceline Middle School |
Linn |
| Marian Middle School |
Saint Louis City |
| Maries County Middle School |
Gasconade |
| Marionville Middle School |
Lawrence |
| Mark Twain Junior High School |
Ralls |
| Marshfield Junior High School |
Webster |
| Maryville Middle School |
Nodaway |
| Meramec Valley Middle School |
Franklin |
| Mexico Middle School |
Audrain |
| Moberly Middle School |
Randolph |
| Monett Middle School |
Barry |
| Monroe City Junior High School |
Monroe |
| Montgomery County Middle School |
Montgomery |
| Moreland Ridge Middle School |
Jackson |
| Morgan Selvidge Middle School |
Saint Louis |
| Mount Vernon Middle School |
Lawrence |
| Mountain Grove Middle School |
Wright |
| Neosho Junior High School |
Newton |
| Neosho Middle School |
Newton |
| Nevada Middle School |
Vernon |
| New Haven Middle School |
Franklin |
| New Madrid County Middle School |
New Madrid |
| New Mark Middle School |
Clay |
| Nicholas A Inman Intermediate School |
Christian |
| Nipher Middle School |
Saint Louis |
| Nixa Junior High School |
Christian |
| Normandy Middle School |
Saint Louis |
| North County Intermediate School |
Saint Francois |
| North County Middle School |
Saint Francois |
| North Jefferson Middle School |
Jefferson |
| North Kirkwood Middle School |
Saint Louis |
| North Middle School |
Jasper |
| North Platte Intermediate School |
Platte |
| North Platte Junior High School |
Platte |
| Northeast Middle School |
Saint Louis |
| Northeast Middle School |
Jackson |
| Northgate Middle School |
Clay |
| Northwest Valley Middle School |
Jefferson |
| Norwood Middle School |
Wright |
| Nowlin Middle School |
Jackson |
| Oak Grove Middle School |
Jackson |
| Oak Ridge Intermediate School |
Camden |
| Oakland Middle School |
Boone |
| Oakville Middle School |
Saint Louis |
