The mother of school shooter Ethan Crumbley is on trial .

Mom of School Shooter Ethan Crumbley Goes on Trial The mother of school shooter Ethan Crumbley is on trial for four counts of involuntary manslaughter in Michigan. Prosecutors argue that Jennifer Crumbley failed to take "just ordinary care" to act on her son's violent intentions, which they say made her criminally responsible for the killings. Her husband, James Crumbley, has also been charged and will be tried separately in March. Both parents have pleaded not guilty. The case is at the forefront of a push by some prosecutors to hold parents accountable when their children carry out gun violence. The trial will test the limits of who is responsible for a mass shooting. Ethan Crumbley, 15 at the time, killed four students and wounded seven others at Oxford High School on November 30, 2021. He has pleaded guilty to one count of terrorism causing death and was sentenced to life in prison without the possibility of parole. Jennifer Crumbley, the mother of Ethan Crumbley, the school shooter who killed four students and wounded seven others at Oxford High School in 2021, is on trial for four counts of involuntary manslaughter in Michigan. Prosecutors argue that Jennifer Crumbley failed to take "just ordinary care" to act on her son's violent intentions, making her criminally responsible for the killings. Her husband, James Crumbley, has also been charged and will be tried separately in March. Both parents have pleaded not guilty. The trial is at the forefront of a push by some prosecutors to hold parents accountable when their children carry out gun violence. The case will test the limits of who is responsible for a mass shooting. Ethan Crumbley, 15 at the time of the shooting, has pleaded guilty to one count of terrorism causing death and was sentenced to life in prison without the possibility of parole. During the trial, prosecutors presented evidence of Ethan's violent intentions, including Instagram posts and surveillance videos. They also testified that the Crumbleys took their son to buy firearms, including the one used in the shooting, and brought him to the firing range multiple times. The most heated exchange of the day came during a midmorning recess after the jury was sent out of the courtroom.