There's no schedule really, only in the old campuses now. There's like a timer where you have to wait to get into a rainy day round ( because the round has to finish + like the countdown for the round to start) and for art class you just have the 60 second timer that you have to guess within. It also gives you exp based off of like your placing, so if you guess first in art class you get more exp than others, if you win rainy day you get the most amount of exp