By the CNN Wire Staff
(CNN) - Students at Ohio's Chardon High School prepared to head back to class Friday for the first time since a gunman walked into the school's cafeteria and killed three teenagers.
Two other students were hospitalized and another was grazed by gunfire Monday morning.
The person who authorities say is responsible, 17-year-old T.J. Lane, was charged Thursday afternoon with three counts of aggravated murder, two of attempted aggravated murder and one of felonious assault, the latter related to an individual who was "nicked in the ear" by a bullet, according to Geauga County Prosecuting Attorney David Joyce.
Some students were with their parents in the school, situated in a community of about 5,100 people some 30 miles east of Cleveland, on Thursday and counseling has been made available at various locales since the shooting.