Avalon High Coronation, book 1: The Merlin Prophecy
Meg Cabot et Jinky Coronado2007

ng a new student at Avalon High has been exciting for Ellie, to say the least—she's an honor student, a star on the track team, and, oh yeah, dating the super-hot class president, Will. Who also happens to be the alleged reincarnation of King Arthur.
Ellie couldn't be happier to have Will in her life, but she's also worried that his estrangement from his parents is tearing him apart. To make matters worse, Will's doubt that he really is King Arthur could prevent the Merlin Prophecy—an age of enlightenment—from occurring. Can Ellie convince Will to believe in something that even she isn't sure about? And more importantly, can she get him to give his parents another chance?