Scared. Is college that hard?

Im the same as you. I have never really taken notes and I dont study, so it was always a surprise to my teachers and classmates when I would get 100% on most the tests I took. I think it depends on the type of learner you are. Some people can just listen to a teacher explain something once and understand it. But for college I think you should invest into study/ note taking methods that work for you. It could just be reading the textbook, I dont really know. But I do know that its what I am going to do, as I also plan to study engineering. Good luck!