School officials also suspended five students for their actions during a raucous bus ride on Tuesday. The 50 students of Earle Wood Middle School in Rockville were ordered off the bus after some of them became unruly on the ride home.
Officials say that some had to walk as far as a mile to get home.
They say the driver's action amounted to a serious breach of adult supervision and student safety. The driver's name was not released. Principal David Brubaker told parents in a letter that students threw objects on the bus, out the window and at the bus driver.