Yes, after the class is over. 
Vâng, sau khi hết giờ học. * 096 like: der Unterricht → →
der Unterricht ☊ giờ học ☊ 
☊ go doing sth: She's decided to go back to teaching. ☊ go back to sth ☊
Do you think that mixed-ability classes hold back the better students? ☊ hold sb/sth back ☊
It always takes the class a while to settle down at the start of the lesson. ☊ settle down, settle sb down ☊
When does the class start? ☊ start ☊