Need help with name of an 80's movie

[flyguru72]

This film was from the 80's and was about 2 sisters who are sent to a prep school or boarding school. The one sister is kind of a punkish, wild dresser and the other is a preppy, neat dresser. They fall into differant groups when they arrive at the school and are kind of at odds with each other but in the end they become friends. Any help with this one?

[GoHawks]

This could be Pretty Smart (1987).  From one of the user comments:

"2 trouble-making girls get sent off to boarding school in Greece. Just another typical 80's movie, with no substance or acting ability, just rebel kids getting into wacky situations."

I can't believe I actually paid money to see this in the theater when it came out.   

[M.10rda]

In GoHawks' defense, the poster for PRETTY SMART was highly alluring... at least for an adolescent male.......