PONTIAC, Mich. (AP) — A judge on Thursday refused to allow a Michigan school shooter to withdraw his guilty plea to two dozen charges, including terrorism and first-degree murder.

Ethan Crumbley’s appellate lawyers cited his mental health and other factors when he waived his right to trial at age 16 and pleaded guilty to killing four students at Oxford High School in 2021.

But Oakland County Judge Kwame Rowe said Crumbley’s guilty plea was “knowingly, voluntarily, and accurately given.”

The judge also said he would not set aside Crumbley’s life prison sentence.

“These are the right decisions under the law, and they allow us to continue doing the most important things — focusing on the victims and their families, and on preventing future shootings,” said prosecutor Karen McDonald.

Crumbley, now 18, was 15 when he brought a gun to school and killed four students and wounded others.

Earlier that day his parents were summoned to discuss violent drawings and agonizing phrases written on a math assignment. They didn’t take him home, and no one checked his backpack for a gun.

James and Jennifer Crumbley are serving 10-year prison terms for involuntary manslaughter. They were accused of making a gun accessible at home and ignoring their son’s mental health.

They were the first U.S. parents to be convicted in a school shooting committed by their child.

Editor’s note: This story has been updated to correct that Abundant Life Christian School serves grades prekindergarten through high school, not kindergarten through high school.

MADISON, Wis. (AP) — A teenage student opened fire with a handgun Monday at a Christian school in Wisconsin, killing a teacher and another teenager during the final week before Christmas break. The shooter also died, police said.

The shooter also wounded six others at Abundant Life Christian School, including two students who were in critical condition, Madison Police Chief Shon Barnes said. A teacher and three students had been taken to a hospital with less serious injuries, and two of them had been released by Monday evening.

“Every child, every person in that building is a victim and will be a victim forever. … We need to figure out and try to piece together what exactly happened,” Barnes said.

Barbara Wiers, director of elementary and school relations for Abundant Life Christian School, said students “handled themselves magnificently.”

She said when the school practices safety routines, which it had done just before the school year, leaders always announce that it is a drill. That didn’t happen Monday.

“When they heard, ‘Lockdown, lockdown,’ they knew it was real,” she said.

The shooter was a 17-year-old female student, a law enforcement official told The Associated Press. The official was not authorized to discuss the ongoing investigation and spoke to the AP on the condition of anonymity.

Police said the shooter was dead by apparent suicide when officers arrived. Barnes declined to give details about the shooter, partly out of respect for the family. With a few rare exceptions, a 17-year-old can’t legally possess a gun in Wisconsin.

Barnes said investigators may have enough information to release more detail about the shooter in another press conference later Monday.

He also warned people against sharing unconfirmed reports on social media about the shooter’s identity.

“What that does is it helps erode the trust in this process,” he said.

Abundant Life is a nondenominational Christian school — prekindergarten through high school — with approximately 420 students in Madison, the state capital.

Wiers said the school does not have metal detectors but uses other security measures including cameras.

Children and families were reunited at a medical building about a mile away. Parents pressed children against their chests while others squeezed hands and shoulders as they walked side by side. One girl was comforted with an adult-size coat around her shoulders as she moved to a parking lot teeming with police vehicles.

A motive for the shooting was not immediately known, but Barnes said they’re talking with the parents of the suspected shooter and they are cooperating. He also said he didn’t know if the people shot had been targeted.

“I don’t know why, and I feel like if we did know why, we could stop these things from happening,” he told reporters.

A search warrant had been issued Monday to a Madison home, he said.

Someone from the school called 911 to report an active shooter shortly before 11 a.m. First responders who were in training just 3 miles (5 kilometers) away dashed to the school for an actual emergency, Barnes said. They arrived 3 minutes after the initial call and went into the building immediately.

Classes had been taking place when the shooting happened, Barnes said. He declined to say where exactly in the school it happened.

Investigators believe the shooter used a 9mm pistol, a law enforcement official told the AP. The official spoke on the condition of anonymity because they were not authorized to discuss the ongoing investigation.

Police blocked off roads around the school, and federal agents were at the scene to assist local law enforcement. No shots were fired by police.

Abundant Life asked for prayers in a brief Facebook post.

Wiers said the school’s goal is to have staff get together early in the week and have community opportunities for students to reconnect before the winter break, but it’s still to be decided whether they will resume classes this week.

Bethany Highman, the mother of a student, rushed to the school and learned over FaceTime that her daughter was OK.

“As soon as it happened, your world stops for a minute. Nothing else matters,” Highman said. “There’s nobody around you. You just bolt for the door and try to do everything you can as a parent to be with your kids.”

In a statement, President Joe Biden cited the tragedy in calling on Congress to pass universal background checks, a national red flag law and certain gun restrictions.

“We can never accept senseless violence that traumatizes children, their families, and tears entire communities apart,” Biden said. He spoke with Wisconsin Gov. Tony Evers and Madison Mayor Satya Rhodes-Conway and offered his support.

Evers said it’s “unthinkable” that a child or teacher would go to school and never return home.

The school shooting was the latest among dozens across the U.S. in recent years, including especially deadly ones in Newtown, Connecticut; Parkland, Florida; and Uvalde, Texas.

The shootings have set off fervent debates about gun control and frayed the nerves of parents whose children are growing up accustomed to doing active shooter drills in their classrooms. But school shootings have done little to move the needle on national gun laws.

Firearms were the leading cause of death among children in 2020 and 2021, according to KFF, a nonprofit that researches health care issues.

Rhodes-Conway said the country needs to do more to prevent gun violence.

“I hoped that this day would never come to Madison,” she said.

Reporting by Scott Bauer, Associated Press. Associated Press writers Alanna Durkin Richer, Ed White and Josh Funk and photographer Morry Gash contributed to this report.

Nearly three years after a teenager killed four of his classmates in a shooting at Oxford High School, victims’ families are still looking for answers.

They want a review of how school officials acted leading up to the shooting, calling on Michigan’s Attorney General, Dana Nessel, to do so this week.

Steve St. Juliana’s daughter, Hana, was among those killed in the Oxford High School attack. He says further action is needed to prevent future school shootings.

“This is about getting the truth out there,” says St. Juliana, “to create the counter measures to save our kids. This is not about identifying people to prosecute.”

The families are frustrated that a state review of procedures around the 2021 shooting has not taken place. They say they’ve had a hard time getting answers from the Oakland County prosecutor and state attorney general — accusing Nessel of retracting an offer to investigate over lack of probable cause.

Speaking to the media, Nessel countered that her offer to review has always been on the table.

“Now these offers were made to the school board and to the criminal investigation and prosecutions being handled by the Oakland County Sheriff’s Office and prosecutor. Our involvement on both fronts was soundly rejected,” she said.

While Nessel says she remains willing to help, she isn’t sure why Oakland County officials are now pointing the case at her.

“My authorities are not expansive beyond those that are already held by the county prosecutor and sheriff, who currently have the investigation, and have investigated this matter thoroughly for years and years now,” she said.

Nessel says her office can’t investigate without a referral from local authorities. She says she’s confused by Oakland County Sheriff Mike Bouchard appearing in support of the Oxford family’s call to action, arguing that she’d need information from him to move forward.

In a statement, Oakland County Prosecutor Karen McDonald said she’s unaware of any action needed by her office to involve the attorney general.

Oxford families say they’re tired of the finger pointing.