CONYERS, Ga. (AP) -- As some students cranked up Marilyn Manson and Snoop Doggy Dogg to celebrate their last day at Heritage High School, others vowed to never again listen to violent music. ``I never used to notice it, but now whenever I hear a violent song or see violence on TV, I get sick to my stomach,'' senior Matt Powell said Monday, the first day of classes after six students were wounded by gunfire. T.J. Solomon, 15, faces 20 counts of aggravated assault, cruelty to children and weapons charges after Thursday's shootings at the suburban Atlanta school. All but one victim has been treated and released. About 90 percent of the school's 1,340 students showed up Monday, primarily to get their yearbooks, each emblazoned with the motto ``1998-99 ... What A Time It Was.'' Students hugged in the parking lot, and some needed to visit the commons area -- where the shots were fired. ``My mom and I watched hours and hours of coverage of Columbine,'' said senior Katy Hinesley, referring to last month's massacre in Littleton, Colo. ``But to have it happen here ... I still haven't come to grips with it.'' Four of the injured students -- Brian Barnhardt, 16, Jason Cheek, 17, Drake Hoy, 17, and Ryan Rosa, 18 -- were at school and off their crutches. Meanwhile, in a tearful interview on CNN, Solomon's mother apologized for her son's actions. ``We grieve for each one of you and we pray for a full recovery,'' Mae Dean Daniele said. ``We thank God that all the children are alive.'' Ms. Daniele also thanked assistant principal Cecil Brinkley, who persuaded her son to surrender after Solomon sank to his knees and put a .357-caliber revolver into his mouth. ``We will forever be grateful to him,'' said Ms. Daniele, who was accompanied by her husband, Robert Daniele. Vice President Al Gore, who was campaigning in Atlanta, stopped briefly in Conyers on Monday to meet privately with five of the six shooting victims and their families. Solomon's lawyer, Ed Garland, acknowledged that the teen was the gunman. ``There's no question he did the shooting,'' Garland said. ``The question that everyone wants to know the answer to -- and that we want to know the answer to -- is why.'' Garland said he would try to keep Solomon -- being held at an undisclosed youth detention center -- within the juvenile court system. District Attorney Richard Read has said he wants the case moved to circuit court so he can try Solomon as an adult. A hearing on the issue is scheduled for June 1. -=-=- 