School for Nobodies by Susie Bower

Until she was 10, Flynn didn't even know her real name. Her adoptive parents have always kept her past a secret, but one mysterious note transforms her world and sets her on a path to discover who she really is. How did she get the burn that covers most of her face? And could she really have a twin?Packed off to a boarding school for misfits, Flynn tries to adjust to the unfair rules and stomach-churning soup while making friends with her unusual classmates.