So Young So Bad (1950)

Idealistic and naive Dr Jason arrives at a school for delinquent girls and immediately begins to try to make a difference in the lives of some of the inmates Oblivious to the sadistic treatment of the girls by the matrons it takes a rebellious girl named Loretta to open his eyes Assisted by a female staff member Jason finally gets proof of the abuse and threatens the head of the school with exposure unless he is given full rein to run things