According to NASA and other United States government agencies, rumors of the world’s demise in 2012 are greatly exaggerated.
NASA senior scientist David Morrison posts videos and answers to questions about the 2012 doomsday at NASA’s “Ask an Astrobiologist” service, which has published this Doomsday Fact Sheet.
More detailed information about the possible Earth-planet Nibiru collision is available from NASA’s Lunar Science Institute.
Scientifically, it looks as though the Earth will still be around after December 21, 2012, despite some predictions. So there’s good reason to keep studying for those finals and maintain or improve your GPA!