I will award 50 Mana per small but useful high school life hack and 150 to 300 per life-changing life hack.

A high school life hack is an original/uncommon way of doing things related to high school, which is significantly useful in some way.

Things that I'd like to optimize are: sleep, low stress, happiness/satisfaction, high complexity/interestingness/new experiences, effective learning, good time management, good social interactions, free time (minimizing time spent doing school-related things), cheap/original/quick food solutions, feeling motivated and awake at school.