What types of essays are a no-no?

Mine wrote an essay about a time she broke a rule with a group of friends and learned from it. I am not a huge fan but she has held firm. It is for the school that, with research, has become my least favorite so I am letting things be. If she doesn’t get in because of that, then they don’t want kids who have made mistakes and learned from them and that’s not a place I can support. Oh well.