| 성취수준 | 2010 | 2011 | 2012 | 2013 | 2014 |
|---|---|---|---|---|---|
| 우수학력 | 120,118(25.21) | 109,843(23.07) | 118,830(23.57) | 103,609(22.05) | 102,065(21.96) |
| 보통학력 | 230,202(48.32) | 275,508(57.86) | 283,234(56.19) | 297,193(63.25) | 290,633(62.52) |
| 기초학력 | 105,659(22.18) | 70,065(14.71) | 78,183(15.51) | 47,958(10.21) | 47,168(10.15) |
| 기초학력 미달 | 20,454(4.29) | 20,733(4.35) | 23,838(4.73) | 21,146(4.50) | 24,978(5.37) |
| 계 | 476,433(100.0) | 476,149(100.0) | 504,085(100.0) | 469,906(100.0) | 464,844(100.0) |