the problem or situation of children being absent from school regularly without permission

My daughter's school has very good exam results and hardly any truancy. 我女儿所在的学校考试成绩很好，几乎没有逃学的。

Truanting was a serious problem in a fifth of the schools surveyed. 在1／5被调查的学校中，逃学是一个严重的问题。