Greatly depends on the class. I think my high school over-prepared me for college so I tend to find most classes easier. Depending on the subject most classes are between 15-50 kids. The bigger ones have TA's. Almost all of my teachers are open for questions in some capacity
... my classes are pretty balanced. I have one very difficult class - physics - and one class that is purely discussion-oriented. I usually try to balance out my semester so that I do not burn myself out.
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