| Age | 1208 | 12.57 | 1025 | 12.27 | 0.30*** |
| Grade | 1208 | 6.330 | 1025 | 5.960 | 0.37*** |
| Gender | 1208 | 0.520 | 1025 | 0.540 | −0.0200 |
| Key_school | 1208 | 0.230 | 1025 | 0.240 | −0.0100 |
| Education_exp | 1208 | 0.790 | 1025 | 0.810 | −0.0200 |
| Education_m | 1208 | 6.630 | 1025 | 6.260 | 0.36* |
| Education_f | 1208 | 7.780 | 1025 | 7.830 | −0.0500 |
| Fincome | 1208 | 51485 | 1025 | 52364 | −879.6 |
| Fincome_p | 1208 | 13132 | 1025 | 9848 | 3283.13*** |
| Tutor | 1208 | 0.310 | 1025 | 0.260 | 0.05** |
| Wf1 | 1208 | 3.320 | 1025 | 3.220 | 0.10** |
| Wf2 | 1208 | 3.020 | 1025 | 3.040 | −0.0200 |
| Learning_eva | 1208 | 2.230 | 1025 | 2.250 | −0.0200 |