In Mike case, he wanted to go to college because of what he saw on a field trip when he was little. He was the less scary monster of the bunch, and he was very little compared to everyone else. In the scene about the field trip, he went over the safety line, and ended up sneaking into a child’s room, then saw the scarer scare the child and just loved it. The scarer didn’t know little Mike was in the room with him. That scarer gave little Mike is his hat and told him good job. That’s what sparked him wanting to go to Monster University. Now what we learned about Sully’s dad Bill Sullivan we know that he is a famous scarer, and he was a Roar Omega Roar. Sully was walking in his dad’s footsteps. We don’t know why he went to Monster