Disney World pulls plug on Grad Nite 1:56 p.m. EST, March 9, 2011 This spring will see the last Grad Nite celebrations at Magic Kingdom, it was announced on the Disney Parks Blog on Wednesday. Disney World says the increase in theme park attendance in the spring has made scheduling the after-hours, separate-ticket event for high school seniors, increasingly difficult. As an alternative, Disney will offer Florida school groups a special one-day, one-park ticket for $55 that's valid any time during the year. Live performances have been a hallmark of the event, which dates back to the 1970s. Musical acts have included Britney Spears, Miami Sound Machine, Katy Perry, Oingo Boingo, Ne-Yo, New Kids on the Block, Paramore and Boys Like Girls. Set for the 2011 and final version of Grad Nite are Taio Cruz, 3OH!3 and Pauly D from "Jersey Shore."