Jennifer Crumbley walks into the Oakland County courtroom of Judge Cheryl Matthews before being found guilty on four counts of involuntary manslaughter on Tuesday, Feb. 6, 2024 in Pontiac, Mich.
Jennifer Crumbley is found guilty in his son's Michigan school massacre.
  • The guilty verdict of the mother of the Michigan school shooter puts parents on notice. 
  • Jennifer Crumbley was found guilty for her son's deadly 2021 rampage that left four students dead.
  • "It's certainly going to embolden prosecutors to bring more of these types of cases," a legal expert said.

In an unprecedented verdict on Tuesday, Jennifer Crumbley was found guilty for her son's 2021 rampage that left four of his Michigan classmates dead.