| Abbreviation | Definition |
|---|---|
| HLC | Health and Learning Center |
| HLC | HealthStream Learning Center |
| HLC | Heritage Learning Center |
| HLC | Horne Learning Center |
| HLC | Hybrid Learning Consortium |
| HLCE | Healthy Living and Community Education |
| HLCE | Houghton Lake Community Education |
| HLCF | Huntington Learning Center Fresno |
| HLE | Home Learning Edition |
| HLE | Home Learning Environment |
| HLG | High Learning Gain |
| HLHL | Healthy Learning Healthy Lives |
| HLO | Harmonized Learning Outcomes |
| HLO | Humber Learning Outcomes |
| HLP | High Learning Potential |
| HLRC | Health Learning Resource Center |
| HLRC | Higher Learning Research Communications |
| HLRC | Humanities Learning Resource Center |
| HMD | Hall Monitor Duty |
| HME | Human Movement Education |