I went to Disneyland towards the end of my senior year of high for our Grad Nite trip.  Since I went to high school in Northern California, we took buses from our high school down to Anaheim for the all night event.  We left during the day from high school and drove down all day until we reached Anahiem.  The Grad Nite event is pretty neat.  Disneyland is only open to high school seniors for an all night party where we get food, rides, and other entertainment included with our admission.  They had a strict dress code where guys had to wear a shirt and tie.  This was not our actual graduation night, but it was a few weeks beforehand.