| Acronym | Definition |
|---|
| MRHS | Morton Ranch High School (Katy, TX) |
| MRHS | Manchester Regional High School (Haledon, New Jersey) |
| MRHS | Mainland Regional High School (Linwood, NJ) |
| MRHS | Monmouth Regional High School (Tinton Falls, New Jersey) |
| MRHS | Marvin Ridge High School (North Carolina) |
| MRHS | Mesa Ridge High School (Colorado Springs, CO) |
| MRHS | Monadnock Regional High School (Swanzey Center, New Hampshire) |
| MRHS | Marriotts Ridge High School (Marriottsville, Maryland) |
| MRHS | Mountain Range High School (Westminister, CO) |
