The Brief Colin Gray, father of Apalachee High School mass shooter Colt Gray, was sentenced to serve 15 years in prison on Thursday. Colin Gray, the father of Apalachee High School mass shooter Colt Gray, appeared in a Barrow County courtroom Thursday where he was sentenced to prison for his role in the 2024 mass murder. Barrow County Superior Court Judge Nicholas Primm sentenced Colin Gray on Thursday afternoon following emotional courtroom testimony and closing arguments. RELATED: Apalachee High School shooter Colt Gray gets life without paroleVictim impact statementsWhat they're saying:Family members of victims killed in the Apalachee High School shooting gave emotional court testimony Thursday morning, demanding the maximum prison sentence for Colin Gray. See all coverage of the Apalachee High School shooting