Adam Horovitz, a k a Ad-Rock of the Beastie Boys, schooled some of New York’s top educators on the finer points of reggae, old Stax Records tracks and classic Marvin Gaye, when he DJ’ed a benefit for the Ghetto Film School organization’s Cinema School in The Bronx this week at the Standard Hotel. The evening honored Joel Klein who mixed with Department of Education CFO Veronica Conforme and GFS board members, including Adam’s sister, “Moneyball” producer Rachael Horovitz, IFC and Sundance Channel president Evan Shapiro and CNN executive vice-president and COO Greg D’AlbaQuestlove followed Ad-Rock to keep the dance floor grooving. [Page Six]