I'm getting a laptop for high school and a laptop that I picked is one that has a 4th generation Intel core i3 processor I wanted to know if I'm able to play wow on medium settings or even higher without lag
It's all about the graphics subsystem. The i3 is more than capable. But if you are relying on the on-die GPU, it will have to be at lowered settings and mid range resolution. If this guy is to be believed, it is possible, tho: https://www.youtube.com/watch?v=R8q_MCoOdN0