The use of injected drugs such as heroin, methamphetamine and steroids is at an all-time high for high school seniors statewide, according to a survey released Monday by the Indiana Prevention Resource Center. The number of students injecting drugs has increased from 1.8 percent in 2001 to 2.2 percent in 2006. Statistics for the northeast part of Indiana, which includes Adams, Allen, DeKalb, Huntington, LaGrange, Noble, Steuben, Wells and Whitley counties, mirrored the statewide average. “I was surprised by the injected drug use that was elevated by 12th-graders,” said Ruth Gassman, executive director of the center. Rich Beck, chief of...