| Acronym | Definition |
|---|
| ECHS➣Early College High School |
| ECHS➣Extended Chs |
| ECHS➣Ex-servicemen Contributory Health Scheme (India) |
| ECHS➣Eliot Community Human Services (Lexington, MA) |
| ECHS➣El Camino High School (California) |
| ECHS➣East Catholic High School |
| ECHS➣East Coweta High School (Sharpsburg, Georgia) |
| ECHS➣Edison Collegiate High School (Fort Myers, FL) |
| ECHS➣Eastside Catholic High School (Washington) |
| ECHS➣Extended Cylinder Head Sector |
| ECHS➣Elliott County High School (Kentucky) |
| ECHS➣Enhanced Cargo Handling System |
| ECHS➣East Canton High School (Ohio) |
| ECHS➣Eden Central High School (New York) |
| ECHS➣Enhanced Cylinders Heads Sectors (computer BIOS) |
| ECHS➣East Christian High School (Grand Rapids, Michigan) |