| Abbreviation | Definition |
|---|---|
| R | Review |
| R | Rithmetic |
| R&E | Research & Education |
| R&R | Redirect and Rephrase |
| r&w | read and write |
| RA | Radical Aproach |
| RA | Read Aloud |
| RA | Reading Ability |
| RA | Reading Age |
| RA | Reading Alarm |
| RA | Rejected Adventure |
| RA | Required Attention |
| RAC | Reading Across The Curriculum |
| RACCE | Radical Advocates for Cross Cultural Education |
| RACE | Racial Awareness Communication Education |
| RACE | Registry of Approved Continuing Education |
| RACEE | Remote Access to Continuing Engineering Education |
| RACHEL | Remote Area Community Hotspots for Education and Learning |
| RACHEL | Remote Areas Community Hotspot for Education and Learning |
| RACK | risk aware consensual kink |