Survey: 2/3rds of UHS seniors had used alcohol, 40% tried marijuana By Mike McGann, Editor, The Times EAST MARLBOROUGH — The numbers are stark: two-thirds of Unionville High School seniors had consumed an alcoholic beverage at some point — and nearly half had consumed one within 30 days of a survey taken in the fall of 2011. More frighteningly, a survey suggests that students say they think smoking...