Chaotic scene after shooting on the first day of school

Tracie Bradford, of Perry Hall, Md., consoles her daughter Leah, a student at Perry Hall High School who says she was in the school's cafeteria when a student was shot there and critically wounded on the first day of classes, Aug. 27, in Perry Hall, Md.

A Baltimore County police officer speaks to a parent as students are evacuated from Perry Hall High School after a student was shot and critically wounded on the first day of classes Aug. 27, in Perry Hall, Md.

Parents and students try to find each other after a student was shot and critically wounded on the first day of classes at Perry Hall High School, Aug. 27, in Perry Hall, Md.