April 17, 2009 9:50 am Zac Efron Is Back in School in “17 Again” After starring in three “High School Musical” films, Zac Efron is back to high school to play the teenage version of Matthew Perry in “17 Again.” US & World Videos 1:36 Arizona Senate repeals 1864 abortion ban 2:15 Heavily-camouflaged minors charged after ‘assassins' game at Old Lyme school 2:40 7th grader brought gun to school in Hartford: police 1:40 Democrats say Big Oil misled public for decades about climate change 1:36 A student brought a gun to middle school in Hartford: police