Grad School

Hey guys. My junior year here at penn state is coming to an end pretty soon, and im still not quite sure what i want to do when i get out of here. My goal would be to go to grad school but i dont have much money to pay for it. I've heard from one of my teachers that certain schools will pay most if not all of the costs for going there if you are going for engineering. I was wondering if anyone knew any information about this and if they know of any schools that pay students full stipens for going there. Thanks