go for campeggio. stellina is tiny. it doesn't even close with a marble notebook stuffed in it (i was comparing sizes for a friend, so i know this. heh).
I take a zucca, scuola, or corriere to school... I really only carry a legal pad pens and a purse if it's not the zucca (another toki ) inside... they're pretty durable and I switch them out from time to time for variety
I want to get a campeggio but I never see one I really like on sale... I don't know which print to get... I'd get tutti but it's more of a zucca bag for me... maybe transporto but I don't like how it's spread apart but it'd probably be one of the better choices for a school bag
Hmm I dont own a stellina or a campeggio.. but I've used my MM for school (University) for a whole semester! Its my dirtiest bag! (Its clean now LOL) It doesnt fit a binder (I dont use binders anyways) but my folders fit vertically LOL horizontally if I'm not carrying much.
I'm a tote type of person so when school starts again, I plan on using my BV! This time, it'll fit binders, folders, agendas and whatever else I need! If I NEED to carry my books everyday.. I might use my trenino! but idk about that..
Good luck with your decision! I'd say go for the Campeggio or BV! Bigger is better for school!