If I got hurt at school , what would I tell my mom?

How did you get hurt and how severe is it? If it's really that bad, like you fell and skinned your knee entirely (Happened to me last week) then you should really tell her. If it wasn't that bad, like a paper cut, you don't have to tell her, those will heal in 2-3 days. Also, why wouldn't you want her to know? She's probably only going to help you cure the pain.