Courses such as physics, which I hadn't taken before coming...

Courses such as physics, which I hadn't taken before coming here, was of course challenging. Other students had taken it in high school, so I had to work harder to grasp the material which was all new to me. But, overall, I look at classes in terms of your learning ability. Your learning ability is your learning ability. Most of the material in college courses is new to everyone, so they are in the same situation as me.