Girl Boss: Escape From Reform School(1973)

Girl Boss Ruriko and her cellmates escape from a greedy corrupt reform school that's more interested in cheating the government out of money than reformation. Each having their own reasons for escaping, they go their separate ways. With the help of a young mechanic, who's also on the lam, Ruriko tries to realize her dream of leaving the island of Japan behind. But the authorities are always one step behind her...