The Education Department will relocate from its headquarters to a smaller Washington office as part of the Trump administration’s dismantling of the agency, officials said Thursday.

The agency has seen its ranks thinned by mass layoffs since Donald Trump took office, and its headquarters building has been 70% vacant, the Education Department said. In its place, the Energy Department will assume the lease in the building.

Education Secretary Linda McMahon hailed it as a milestone in the administration’s efforts to shutter the agency, which Trump ordered to move toward closure a year ago this month.