FRAMINGHAM -- Two Framingham High seniors arrested in January after they were ordered off high school property because they were building a snow fort were found guilty yesterday of trespassing. Jenna Schroeder and Jason Osorio, both 18, now face a maximum of 30 days in jail after the two-day trial in Framingham District Court. The jury of three men and three women deliberated for about three hours before they reached a verdict. Judge Douglas Stoddart will sentence the pair May 16. Although punishable by a maximum of 30 days in jail, according to Massachusetts General Law, an offender can also...