I don’t recall any choices that mattered. They are all fake choices like “Do you want to be rivals: yes/no” and choosing no just repeats the question.
I only singled out Arven because his character started out kind of bratty and my opinion of him flipped completely by the end of the game.
Sw/Sh were a real low point. They boiled the story down to “Let the adults handle it” and left you just running between gyms the entire game.
It’s honestly been too long since I’ve played the older games to judge their writing… but I did play Scarlet recently, and have to give props to Arven’s storyline. It is a shame the game is at Resident Evil 6 levels of unfocused, and brain-dead levels of easy.
Is there any reward for the classroom stuff? I completely skipped it thinking it was all tutorial.