| Abbreviation | Definition |
|---|---|
| ECHS | El Camino High School |
| ECHS | El Campo High School |
| ECHS | El Capitan High School |
| ECHS | El Cerrito High School |
| ECHS | El Cerrito High School's |
| ECHS | Elkhart Central High School |
| ECHS | Environmental Charter High School |
| ECHS | Escondido Charter High School |
| ECIP | Early Childhood Inclusive Preschool |
| ECIS | Education Collaborative International Schools |
| ECIS | Educational Collaborative for International Schools |
| ECIS | European Council of International Schools |
| ECISD | East Central Independent School District |
| ECLC | Early Childhood Learning Community |
| ECMS | East Cary Middle School |
| ECMS | East Central Middle School |
| ECMS | East Cobb Middle School |
| ECMS | East Coweta Middle School |
| ECMS | Edmonson County Middle School |
| ECMS | Effingham County Middle School |