Yes and I can tell you it's not very pleasant. I had a 4 week summer session for Gen Chem 3 (my school uses the quarter system) and Orgo Lec 3 Mon-Fri for 3 hrs. It is really fast paced and the professors move thru the material sooo quickly, it can be challenging. I did the summer school because I just wanted to be done with the chemistry requirement for my degree.