| Abbreviation | Definition |
|---|---|
| SCST | Society for College Science Teachers |
| SCTA | Sachem Central Teachers Association |
| SCTA | Sacramento City Teachers Association |
| SCTA | Sarasota Classified Teachers Association |
| SCTA | Sarasota Classified/Teachers Association |
| SCTL | Scholars Collaboration in Teaching and Learning |
| SCUE | Student Committee on Undergraduate Education |
| SCZ | Sedgwick County Zoo |
| SD | Strongly Disagree |
| SDA | Service Delivery Area |
| SDAAE | South Dakota Alliance for Arts Education |
| SDAE | San Diego Adult Educators |
| SDAIE | Specially Designed Academic Instruction in English |
| SDALL | South Dakota Association for Lifelong Learning (Huron, SD) |
| SDALL | Southern Delaware Academy of Lifelong Learning |
| SDB | School Digital Books |
| SDC | Skill Development Council |
| SDC | Special Day Class |
| SDC | State Development Center |
| SDCE | San Diego Continuing Education |