Clarification: Best-designed from an end-user UI standpoint. I agree that the code is probably pretty bad, given that it slows to a grinding crawl when it's nearing the due date of a big assignment for a subject. Page load times tend to skyrocket and everything bogs down.

I have a feeling that those sorts of things can be optimised though. On the other hand, the UI is more concrete, because it's what people are used to.