We never see Disney characters in college, but I think it'd look like this:
Snow White
She's a biology major, with a pre-vet concentration.
Belle
She's an English major--no doubt about that.
Cruella de Vil
She's a fashion major without any ethics.
Tiana
She's going to culinary school, for sure.
Rapunzel
She's an art major.
Mulan
She'd be a political science major with a minor in gender studies. She's also in the ROTC program.
Cinderella
She'd focus on hospitality studies.
Yzma
She's a chem major but couldn't afford good help.
Thanks to my friend Sabrina Lemm for brainstorming these with me!