Teacher au! Cosette can be a music teacher, eponine is the school social worker, Marius teaches all the languages, Enjorals is a lawyer that fights for education rights, Grantaire is the teacher whose class you take for an easy A cause he's just doesn't even try, Jehan is a literature teacher. Idek about the rest just teachers!
Oh my! You can check my teacher au tag for everything Les Amis as teachers I have!!!! so many!!!!