When the sixth teenage suicide hit, Anne Einhorn, a Cherry Hill mother and school board member, remembers sitting helplessly in her kitchen as her son and his friends vented over why it kept happening. The first was a girl, in 2000. The last one, an eighth grader, took his life, with no apparent warning, in the spring of 2004. "It was frightening," Einhorn said. "And it seemed they were getting younger as time went on." The Cherry Hill school district wasn't going to wait for another. Last year, substance abuse counselor Jen DiStefano brought in a screening process -- one...