I love School Desks (1988)

At a high school in Athens, the unhappy headmaster is having a hard time with a group of seniors who have paired up, are making life difficult for the teachers and himself, and insist on going on a trip together to find her. However, the Board of Directors objects and decides that the girls should go alone. The boys, however, not wanting to be betrayed by the girls, follow them in various ways. So, when they arrive, the party begins...