Michigan teen charged in Oxford High School shooting

“What about all the children who ran, screaming, hiding under desks? ... Those are victims, too, and so are their families and so is the community,” McDonald said.

Video posted on social media showed students rushing to get out of first-floor classroom windows rather than open a door to someone who claimed to be a police officer. Bouchard said he likely was a detective.

After the attack, authorities learned of social media posts about threats of a shooting at the 1,700-student school. The sheriff stressed how crucial it is for such tips to be sent to authorities, while also cautioning against spreading social media rumors before a full investigation.

A concerned parent, Robin Redding, said her son, 12th-grader Treshan Bryant, stayed home Tuesday after hearing threats of a possible shooting.

“This couldn’t be just random,” she said.

After the 2016 presidential election, Crumbley’s mother wrote an open letter to Donald Trump as a blog post. It suggested school trouble, financial struggles, resentments — but also hope for the future.

Jennifer Crumbley said she was skipping car insurance payments to hire a tutor to help her son, who was 10 at the time. She blamed the “common core” curriculum used by teachers.

"My son struggles daily, and my teachers tell me they hate teaching it but they have to,” Jennifer Crumbley wrote.

She also celebrated her right to own a gun, referring to her job as a real estate agent.

“As a female and a Realtor, thank you for allowing my right to bear arms. Allowing me to be protected if I show a home to someone with bad intentions,” she wrote. “Thank you for respecting that Amendment.”