Correct

拖堂

/ tuōtáng /
Strokes

Definition

to drag out a lesson/to insist on extending class after the bell

Example

As a Verb

(of a teacher) run over one's time; not dismiss class when time is up

1
men
我们
wèi
那位
lǎoshī
老师
几乎
měi
每次
dōu
tuōtáng
拖堂
  

That teacher of ours ran over his time almost every class.