| Clue | Source | Date |
|---|---|---|
| Advance degrees for some teachers: Abbr. | ||
| Advanced teaching degrees: Abbr | LA Times Daily | 06 Oct 2019 |
| Advanced teaching degrees: Abbr | The Washington Post | 06 Oct 2019 |
| Popular master's degrees for teachers, briefly | ||
| Advanced teaching degrees: Abbr. | ||
| Some teachers' degs. | ||
| Some teachers' degs. | ||
| Some teachers' degs. |