why do people like to get in trouble in primary school?

Well..... I think they do not mean to get in trouble on purpose. The reason why they(primary school students i guess) get into trouble is because they are immature and inexperienced. Sometimes those so-called trouble are avoidable, it is just you know how to avoid it or not, and that shows the differences.

In my opinion, they want to do it is because they have to show off themselfs and to show how difference they are.
Since the feel bored in the lesson, so they want to do somethings to get some happiness.

Maybe because the hong kong people is not good at english!