I have 2 sims in University. They didn't miss one class, did all of their homework and all projects completed! What's more is they are both maxed in all skills! ALL SKILLS!!! AND NOW THEY ARE BOTH ON ...
I do my presentations and term papers as quickly as possible on the very first weekend the term starts. Then, go and present ASAP. That way, all I have to do is focus on homework. I’ve always got A+ semesters; maybe because my Sim jumps into degrees appropriate for their skill level and interests?