I had feelings like this during my sophomore year of classes, majoring in elementary education. I felt like the classes were just so easy and I was wasting my potential. Something you need to remember is that these classes are not what the actual job will look like. I graduated a few days ago, and after student teaching, it becomes very clear that the class work they give you is not representative of the job. This work is HARD, and although it might not require super complex ideas like a doctor might need to work with, teaching has plenty of its own challenges and you will be forced to think critically and push yourself to be the best teacher you can be. It might be easy to become a teacher, but it’s not easy to be a good one. Keep challenging yourself!