Wild Child (2008)

Poppy is a self-obsessed, incorrigible brat who lives a pampered life in her L.A. world. Although she's handed credit cards with unlimited balances and surrounded by countless hangers on, Poppy can't escape the mounting frustration she feels with her family situation. After a final thoughtless prank, her exasperated father ships her off to boarding school in England. There, Poppy meets her match in a stern headmistress and a class full of girls who will not tolerate her selfishness.