It's a case Assistant U.S. Attorney Lisa Fletcher says rocked the All Saints Elementary School community to its core.

"You send your kid to school and you think they're going to be safe. And then you find out that somebody like this was charge of their care, and that just rattles you forever," Fletcher said. "It rattles your trust in people."

From 2014 to 2016, former All Saints staffer Emily Oberst sexually exploited young children under the age of 4 with Jason Kopp. Both pleaded guilty to federal charges.

Kopp is already serving a 235-year sentence. And on Tuesday, Oberst was sentenced to 60 years behind bars.

The crimes took place both at the school and at Oberst's home. In court, Oberst had nothing to say before her sentencing. But, her attorney said Oberst had "accepted responsibility."

Fletcher says Oberst's actions were "horrific" and "inexcusable."

"I think everyone was a little surprised that she had nothing to say," Fletcher said. "I don't know what she would have said or could have said, maybe 'I'm sorry.' But, that's not my place to make that judgement."

After her time in prison, Oberst will be on lifetime supervised release.