Does anyone know any online games that are unblocked at schools?

Depends on the school and their internet settings. I don't reccommend that you goof off and play games without permission. Some schools can watch what you're doing on your computer if you don't have your own internet network. If you want to go through with this, I'm not going to try to persuade you not to:city siege 1, 2, 3, and 4, warframe is a free downloadable game, If you were trying to play games during school, try downloading games onto it. Warframe, minecraft, my tribe