To be honest, it depends on how responsible a student is. I myself is a still a student who relies in Bitcoin to help me finance myself but I for once haven't forgot about my studies and had an average grade of B+. You should consult your students and approach them to give them some advice. It's not Bitcoin's fault but it was students entirely. 
Yeah dude.... Time managing. others want to go school because they are genius. even didnt go to school they only go school class when examination. I had that one of my friend on collegue. he is great dude like you..