| Abbreviation | Definition |
|---|---|
| CTTL | Center for Transformational Teaching and Learning |
| CTTL | Center for Transformative Teaching and Learning |
| CTTL | Center for Transformative Teaching Learning |
| CTTL | Commission on Technology in Teaching and Learning |
| CTTP | Carmel Teacher Training Partnership |
| CTTP | Computer Teacher Training Programme |
| CTTT | Center for Transformative Teacher Training |
| CTTT | Consortium for Training Translation Teachers |
| CTU | Cleveland Teachers Union |
| CTU | Croatian Teachers Union |
| CTUF | Chicago Teachers Union Foundation |
| CTW | Classrooms That Work |
| CTWN | Change The World Now |
| CTWT | Change The World Together |
| CTY | Center For Talented Youth |
| CTY | Center for Troubled Youth |
| CU | Consistent Underachiever |
| CUBE | Collaborative Undergraduate Biology Education |
| CUBE | Council of Urban Boards of Education |
| CUCAS | China's University and College Admission System |