" last minute cramming won't change much."
Nonsense. Some learn over time, others have to cram study. No one learns the same, and many different ways to remember facts and info etc..
Cram studying is a common technique.
Blake if you left your stuff at school it seems you'll have to try and find material online, or ask a classmates for some pictures of theirs.
Regarding the father, 'celebrate' how you see fit, do what feels best for you blake.