I think this might be a Chinese Holly. I am 99% sure it is a holly in general though. This bush is the bane of every hyperactive 6-year-old, as it is less than forgiving towards those who accidentally fall into it. The tips of the leaves are sharp and prickly., and I get flashbacks sometimes when I see them. I am not sure if the berries are edible, but I should find out. They could be a great quick snack in between classes.
http://www.inaturalist.org/observations/5958073