| Years | Total | Ordinary high school students | Ordinary high school teachers | Student-teacher ratio | Secondary vocational education Student at school | Secondary vocational education teacher | Student-teacher ratio |
| 2013 | 4369.9 | 2435.9 | 162.9 | 15.0:1 | 1923.0 | 86.8 | 23.0:1 |
| 2014 | 4170.7 | 2400.5 | 166.3 | 14.0:1 | 1755.3 | 85.8 | 20.4:1 |
| 2015 | 4037.7 | 2374.4 | 169.5 | 14.0:1 | 1656.7 | 84.4 | 20.0:1 |
| 2016 | 3970.1 | 2366.7 | 173.3 | 14.0:1 | 1599.0 | 84.0 | 19.0:1 |
| 2017 | 3971.0 | 2374.5 | 177.4 | 13.0:1 | 1592.5 | 83.9 | 19.0:1 |