In school it seemed the same way to me, it was very superficial and my high school teacher was unable to anwer my "why" questions. At university it was very di

In school it seemed the same way to me, it was very superficial and my high school teacher was unable to anwer my "why" questions. At university it was very different, I finally got my questions answered. Part of that was certainly that it was much more in-depth, but the quality of the teaching and also the textbooks was just much higher. For me there were also maybe a few core things I didn't understand in school that are really crucial to put everything into context. The biggest one maybe being a tiny bit of thermodynamics and understanding what enzymes actually do and what they can't do. I do suspect that a major problem is trying to cover too much material, which makes the courses too superficial and makes it impossible to actually explain how stuff works, what problems are solved by specific biological systems and why they probably work the way they do.