PONTIAC, Mich. (AP) — A Michigan jury convicted a school shooter’s mother of involuntary manslaughter Tuesday in a first-of-its-kind trial to determine whether she had any responsibility in the deaths of four students in 2021.
Prosecutors say Jennifer Crumbley was grossly negligent when she failed to tell Oxford High School that the family had guns, including a 9 mm handgun that her son, Ethan Crumbley, used at a shooting range on the weekend before the Nov. 30, 2021, attack.

Carlos Osorio – pool, ASSOCIATED PRESS
Jennifer Crumbley is escorted away, Monday, Feb. 5, 2024 in Pontiac, Mich. The jury received instructions from a judge and begin deliberations in an unusual trial against a school shooter's mother. The deliberations beginning Monday could send Crumbley to prison if she is convicted of contributing to the deaths of four students in 2021.
The jury — six men and six women including some gun owners or people who grew up with guns — began deliberations Monday morning. They sent a note to the judge that afternoon asking if they could “infer anything” from prosecutors not presenting Ethan Crumbley or others to explain specifically how he got access to a gun at home to shoot up Oxford High School.
“The answer is no,” Oakland County Judge Cheryl Matthews said. “You’re only allowed to consider the evidence that was admitted in the case.”
Prosecutors say Jennifer Crumbley had a duty under Michigan law to prevent her son, who was 15 at the time, from harming others. She’s accused of failing to secure a gun and ammunition at home and failing to get help for her son’s mental health.
The morning of Nov. 30, 2021, school staff members were concerned about a violent drawing of a gun, bullet and wounded man, accompanied by desperate phrases, on Ethan Crumbley’s math assignment. He was allowed to stay in school following a meeting with his parents, who didn’t take him home.
A few hours later, Ethan Crumbley pulled a handgun from his backpack and shot 10 students and a teacher, killing four peers. No one had checked the backpack.
The gun was the Sig Sauer 9 mm his father, James Crumbley, purchased with him just four days earlier. Jennifer Crumbley took her son to a shooting range that same weekend.
“You’re the last adult to have possession of that gun,” assistant prosecutor Marc Keast said while cross-examining Jennifer Crumbley last week. “You saw your son shoot the last practice round before the (school) shooting on Nov. 30. You saw how he stood. … He knew how to use the gun.”
The teen’s mom replied, “Yes, he did.”
Ethan Crumbley, now 17, pleaded guilty to murder and terrorism and is serving a life sentence. Prosecutors were not required to call him as a witness to try to prove their case against Jennifer Crumbley.
Her lawyer argued last week that the teen actually might be able to help her defense. It didn’t matter: The judge kept him off the witness stand because attorneys for Ethan Crumbley said he would cite his right to remain silent. He still might appeal his sentence.
Jennifer and James Crumbley are the first parents in the U.S. to be charged in a mass school shooting committed by their child. James Crumbley, 47, faces trial in March.
Jennifer Crumbley, 45, told jurors that it was her husband’s job to keep track of the gun. She also said she saw no signs of mental distress in her son.
“We would talk. We did a lot of things together,” she testified. “I trusted him, and I felt I had an open door. He could come to me about anything.”
In a journal found by police, Ethan Crumbley wrote that his parents wouldn’t listen to his pleas for help.
“I have zero help for my mental problems and it’s causing me to shoot up the … school,” he wrote.
-
Parkland school shooter to get life sentence for killing 17
AP file
COLUMBINE HIGH SCHOOL, April 1999: Two students killed 12 of their peers and one teacher at the school in Littleton, Colorado, and injured many others before killing themselves.
AP file
COLUMBINE HIGH SCHOOL, April 1999: Two students killed 12 of their peers and one teacher at the school in Littleton, Colorado, and injured many others before killing themselves.
-
Parkland school shooter to get life sentence for killing 17
AP file
RED LAKE HIGH SCHOOL, March 2005: A 16-year-old student killed his grandfather and the man's companion at their Minnesota home, then went to nearby Red Lake High School, where he killed five students, a teacher and a security guard before shooting himself.
AP file
RED LAKE HIGH SCHOOL, March 2005: A 16-year-old student killed his grandfather and the man's companion at their Minnesota home, then went to nearby Red Lake High School, where he killed five students, a teacher and a security guard before shooting himself.
-
-
Parkland school shooter to get life sentence for killing 17
The News & Advance, Chet White, file
VIRGINIA TECH, April 2007: A 23-year-old student killed 32 people on the campus in Blacksburg, Virginia, in April 2007; more than two dozen others were wounded. The gunman then killed himself.
The News & Advance, Chet White, file
VIRGINIA TECH, April 2007: A 23-year-old student killed 32 people on the campus in Blacksburg, Virginia, in April 2007; more than two dozen others were wounded. The gunman then killed himself.
-
Parkland school shooter to get life sentence for killing 17
AP file
SANDY HOOK ELEMENTARY SCHOOL, December 2012: A 19-year-old man killed his mother at their home in Newtown, Connecticut, then went to the nearby Sandy Hook Elementary School and killed 20 first graders and six educators. He took his own life.
AP file
SANDY HOOK ELEMENTARY SCHOOL, December 2012: A 19-year-old man killed his mother at their home in Newtown, Connecticut, then went to the nearby Sandy Hook Elementary School and killed 20 first graders and six educators. He took his own life.
-
-
Parkland school shooter to get life sentence for killing 17
AP file
UMPQUA COMMUNITY COLLEGE, October 2015: A man killed nine people at the school in Roseburg, Oregon, and wounded nine others, then killed himself.
AP file
UMPQUA COMMUNITY COLLEGE, October 2015: A man killed nine people at the school in Roseburg, Oregon, and wounded nine others, then killed himself.
-
Parkland school shooter to get life sentence for killing 17
AP file
MARJORY STONEMAN DOUGLAS HIGH SCHOOL, February 2018: An attack left 14 students and three staff members dead at the school in Parkland, Florida, and injured many others. The 20-year-old suspect was charged with murder.
AP file
MARJORY STONEMAN DOUGLAS HIGH SCHOOL, February 2018: An attack left 14 students and three staff members dead at the school in Parkland, Florida, and injured many others. The 20-year-old suspect was charged with murder.
-
-
Parkland school shooter to get life sentence for killing 17
AP file
SANTA FE HIGH SCHOOL, May 2018: A 17-year-old opened fire at a Houston-area high school, killing 10 people, most of them students, authorities said. The suspect has been charged with murder.
AP file
SANTA FE HIGH SCHOOL, May 2018: A 17-year-old opened fire at a Houston-area high school, killing 10 people, most of them students, authorities said. The suspect has been charged with murder.
-
Parkland school shooter to get life sentence for killing 17
AP file
ROBB ELEMENTARY SCHOOL, May 2022: An 18-year-old gunman opened fire Tuesday at an elementary school in Uvalde, Texas, killing 19 children and two adults, officials said. The 18-year-old attacker was killed by law enforcement.
AP file
ROBB ELEMENTARY SCHOOL, May 2022: An 18-year-old gunman opened fire Tuesday at an elementary school in Uvalde, Texas, killing 19 children and two adults, officials said. The 18-year-old attacker was killed by law enforcement.