Blue Murder at St. Trinian's (1957)

With their headmistress imprisoned, the girls of St. Trinian's are now under military supervision. However, the resourceful sixth formers set their sights on a trip to Italy, ready to employ any tactic necessary to achieve their goal. The army soon realizes that containing the spirited students is a challenge unlike any other. As the girls unleash their antics across Europe, they unwittingly jeopardize diplomatic relations, proving that when it comes to mischief, St. Trinian's is always a step ahead.