| Abbreviation | Definition |
|---|---|
| ATM | Act Think Move |
| ATM | Another Teachable Moment |
| ATME | Association of Theatre Movement Educators |
| ATML | Advanced Topics in Machine Learning |
| ATMP | Alabama Teacher Mentor Program |
| ATOLL | Aquaculture Training On Line Learning |
| ATP | Administrators Teachers and Parents |
| ATP | Approved Training Provider |
| ATPM | Association of Teachers of Preventive Medicine |
| ATPR | Annual Teacher Performance Review |
| ATR | Absent Teacher Reserve |
| ATRS | Arkansas Teacher Retirement System |
| ATS | Advance Training System |
| ATS | Alternate Training Solutions |
| ATS | Approved Teacher Status |
| ATSS | Automated Teacher Substitution System |
| ATSW | Assessment of Teacher Skills Written |
| ATTC | Advanced Teachers' Training Course |
| ATTC | Arabic Teacher Training Course |
| ATVET | Afghanistan Technical Vocational Education and Training |