Starfleet Academy: A Novel by Diane Carey
Cadet David Forester has made it to Starfleet Academy's Command School, where the starship captains of the future are trained on mission simulators that make you feel as if you are really on the bridge of a Federation starship. But there's trouble at the Academy-- sabotage, conflict, and a series of "accidents" throw Forester's team of cadets into a scramble for their very lives.
Determined to save his crew, Forester rushes to stop a plot to destroy the Academy itself, and is thrust into a mission with Starfleet legends Captain James T. Kirk, Captain Hikaru Sulu, and Commander Pavel Chekov. Together they must find the cause behind a series of ever deadlier raids on Federation outposts by an unknown enemy.