On May 20 , 1999 , a month to the day after the Columbine High School massacre , 15-year-old student Anthony " T.J. " Solomon opened fire with a .22-caliber rifle on the Heritage campus , wounding six students . A 15-year-old girl was hospitalized in critical condition , and the other victims suffered non-life-threatening injuries . Solomon attempted suicide with a revolver but was talked into surrendering by an assistant principal . Solomon initially faced up to 351 years of prison if convicted of aggravated assault and other charges , but in 2000 he was found guilty but mentally ill , and was sentenced to 40 years in prison and 65 years of probation . A judge later reduced his sentence from 40 to 20 years . He was released to his mother 's house on parole on July 26 , 2016
Columbine High School massacre
Columbine High School massacre
Heritage High School (Conyers, Georgia)