I want to know which AP classes are the most challenging. The reason why I’m asking this is because I am applying for extremely competitive colleges like: Columbia, Harvard, Penn, and Stanford. And what these colleges will look at is your transcript and see that you have challenged yourself with ap classes. I was thinking of:
- AP Biology,
- AP Chemistry
- AP Statistics
- AP Calculus AB
- maybe AP Physics C
Please let me know if there are any harder ap classes than the one’s listed above. Thank you 
Most AP classes are quite challenging. What are you personally interested in? Which would you take if you weren’t thinking about what colleges might think?
If you decide to take subjects where several options are available, try the harder one if possible (like Calculus AB vs BC, the different levels of Physics, etc.).
I’m aiming toward being a premed and biochemistry major when I get to college, because I’m planning on being a sine surgeon after college. My interest would aim more towards Biology and Calculus AB/BC and Chemistry