| Acronym | Definition |
|---|
| MCHS➣Mayo Clinic Health System (various locations) |
| MCHS➣Montezuma-Cortez High School (Cortez, CO) |
| MCHS➣Mercy College of Health Sciences (Des Moines, Iowa) |
| MCHS➣Martin County High School |
| MCHS➣Middle College High School |
| MCHS➣Mt Carmel High School |
| MCHS➣Mira Costa High School (CA, USA) |
| MCHS➣Manor Care Health Services (various locations) |
| MCHS➣Morris Community High School |
| MCHS➣Mayde Creek High School (Katy, Texas, USA) |
| MCHS➣Moreau Catholic High School (Hayward, CA) |
| MCHS➣Middle Creek High School (Apex, North Carolina) |
| MCHS➣Maria Carrillo High School (Santa Rosa, CA) |
| MCHS➣Mason City High School (Louisiana, USA) |
| MCHS➣Midwest City High School (Midwest City, OK) |
| MCHS➣Milken Community High School |
| MCHS➣Michigan City High School (Michigan City, Indiana) |
| MCHS➣Maternal and Child Health Section (various locations) |
| MCHS➣Marine City High School (Marine City, Michigan) |
| MCHS➣Mountain Crest High School (Hyrum, UT) |
| MCHS➣Morgan City High School (Morgan City, Louisiana) |
| MCHS➣Memorial Composite High School |
| MCHS➣Mascoutah Community High School (Mascoutah, IL) |
| MCHS➣Midland County Historical Society (Michigan) |
| MCHS➣Marin Catholic High School (Kentfield, CA) |
| MCHS➣Memphis Catholic High School (Memphis, Tennessee) |
| MCHS➣Massena Central High School (New York) |
| MCHS➣Meridian Charter High School |
| MCHS➣Manheim Central High School (Manheim, PA) |
| MCHS➣Mt. Carmel Health System (Columbus, OH) |
| MCHS➣Methodist Children's Home Society |
| MCHS➣Moore Catholic High School (Staten Island, New York) |
| MCHS➣Marin Continuum of Housing and Services (Novato, CA) |
| MCHS➣Marion County Herpetological Society (Florida) |
| MCHS➣McHenry Community High School (McHenry, IL) |
| MCHS➣Mother and Child Health Services |
| MCHS➣Marine Common Hardware Suites |