Both sexes - Teaching in Upper Secondary School - Total (Number)
| 2017 | 2019 | 2020 |
| East Azerbaijan | 6,965 | 6,511 | 6,587 |
| West Azerbaijan | 5,328 | 5,022 | 5,338 |
| Ardabil | 2,954 | 2,827 | 2,963 |
| Isfahan | 9,809 | 9,253 | 9,481 |
| Ilam | 2,029 | 1,945 | 2,019 |
| Bushehr | 1,999 | 1,940 | 2,028 |
| Tehran | 19,252 | 17,869 | 18,126 |
| Chaharmahal and Bakhtiari Province | 2,523 | 2,473 | 2,461 |
| South Khorasan | 2,000 | 2,085 | 2,092 |
| Razavi Khorasan | 12,828 | 11,829 | 11,839 |
| North Khorasan | 2,129 | 2,154 | 2,164 |
| Khuzestan | 9,131 | 8,624 | 9,074 |
| Zanjan | 2,231 | 2,284 | 2,261 |
| Semnan | 1,474 | 1,353 | 1,444 |
| Sistan and Baluchestan | 3,967 | 4,222 | 4,540 |
| Fars | 10,852 | 10,401 | 10,487 |
| Qazvin | 2,306 | 2,270 | 2,503 |
| Qom | 2,581 | 2,471 | 2,554 |
| Kurdistan | 3,829 | 3,787 | 3,871 |
| Kerman | 7,214 | 6,843 | 7,087 |
| Kermanshah | 4,427 | 4,224 | 4,481 |
| Kohgiluyeh and Boyer-Ahmad | 2,353 | 2,348 | 2,271 |
| Golestan | 3,175 | 2,954 | 2,917 |
| Gilan | 5,043 | 4,841 | 4,975 |
| Lorestan | 4,478 | 4,277 | 4,269 |
| Mazandaran | 7,468 | 7,186 | 7,158 |
| Markazi | 2,276 | 2,085 | 2,384 |
| Hormozgan | 3,221 | 3,420 | 3,619 |
| Hamadan | 3,532 | 3,342 | 3,474 |
| Yazd | 2,318 | 2,164 | 2,257 |
| Alborz | 4,351 | 4,232 | 4,420 |