A federal judge ruled that mass layoffs at the U.S. Education Department are causing “irreparable harm” to students and educators.

U.S. District Judge Myong Joun in Boston granted a preliminary injunction stopping the Trump administration from carrying out two plans announced in March that sought to work toward Trump’s goal to dismantle the department. It marks a setback to one of the Republican president’s campaign promises.

A federal judge has blocked President Donald Trump’s executive order to dismantle the Education Department and ordered the agency to reinstate employees who were fired in mass layoffs