He is often late to go to school.
顺附上be late to和be late for的区别：
be late for 因…而迟到,做…迟到.后接名词.例：
I will not be late for school.
我上学不会迟到.
I'll be late for the meeting.
我开会要晚了.
be late to 后接的是动词,表示做这个动作稍晚,迟.例：
“Why were you late to school this morning?
“今天早上你为什么上学迟到?”