The U.S. Education Department said it will forgive $150 million in federal student loans as part of a 2016 rule that Secretary Betsy DeVos previously tried to block.

Department officials began notifying 15,000 students on Friday that their loans will automatically be erased because they attended colleges that closed while they were still in school or shortly after they finished. About half of them attended campuses under the for-profit Corinthian Colleges chain, which collapsed in 2015 amid widespread accusations of fraud.

The students are eligible for loan relief under an Obama-era rule that was intended to make it easier for defrauded students to get their loans cleared. Part of the rule granted automatic loan forgiveness to students who attended colleges that closed more than three years in the past and who never attended another school afterward.

DeVos delayed the rule in 2017 following a legal challenge from a California association of for-profit colleges, and she later moved to scrap the rule entirely and proposed her own replacement, which would have eliminated automatic loan discharges and raised the bar to prove fraud by schools.

But a federal judge ruled in September that her delay was unlawful, siding with Democratic attorneys general from more than a dozen states who sued over the postponement. A month later, the same judge dismissed another challenge by the California association, effectively clearing the way for the rule to take effect.

DeVos has continued to oppose the rule, calling it "bad policy," and says she still plans to write new rules that will protect borrowers and taxpayers. Still, the Obama-era law could remain in effect until at least July 2020, when any new policy written by DeVos could take effect.

The automatic discharges were hailed as a victory by groups that represent borrowers, but they said it's just the first step in the rule's implementation. Several drew attention to more than 100,000 other students who say they were swindled by their schools but are still waiting on the Education Department to decide their applications for loan relief.

James Kvaal, president of the Institute for College Access and Success, said the initial round of discharges was "welcome news" for the borrowers it will help.

"But these 15,000 borrowers are a small fraction of those eligible for loan discharges because their schools closed or committed illegal acts. It's long past time for the Department of Education to meet its legal obligations to students," Kvaal said.