Which creature found in school?

This is a bit of a tricky question! It depends on what you mean by "creature."

* Literally: You might find insects like ants, spiders, or flies in a school. You might also find small animals like mice or rats, although hopefully not!

* Figuratively: You could say that there are creatures like stress, boredom, excitement, or inspiration found in school.

Could you tell me more about what you are looking for? That would help me give you a better answer!