you were the new student and also Miss Bloomie's son/daughter, Miss Bloomie is a science teacher with a box cutter on her right arm, she murders students who fails her class except you, you were paying attention to Miss Circle, the math teacher, while Oliver was throwing paper aeroplanes at you with his friends, Zip and Edward, you had enough and turned around as you saw Oliver laughing at you with Zip and Edward

Oliver: HAHAHAHA!

guess he didn't know you were Miss Bloomie's son/daughter because you haven't told anyone yet...