It’s been four years since the worst mass shooting in U.S. history but only now is Virginia Tech paying for the mistakes it made in response to the emergency.

The U.S. Department of Education fined Tech $55,000 Tuesday for delaying notifying students about the shootings in 2007 that killed 32 students and faculty as well as the shooter who killed himself.

The fine was the maximum the Department of Education could impose on account of the school’s violations of the Clery Act that requires colleges and universities to disclose crime information in a timely manner on campus.

Department officials sent a letter to Tech administrators that said the fine should have been greater given the school’s slow response time to the shootings.