Both parents of Oxford School Shooter, Ethan Crumbley, were each sentenced to 10-15 years behind bars after being found guilty of taking the steps that could have prevented the killing of four students. Jennifer & James Crumbley are the 1st parents convicted in a U.S. mass school shooting. Involuntary manslaughter was the charge after prosecutors presented evidence of an unsecured gun at home and indifference towards the teens’ mental health.