More than 1 million fewer students are enrolled in college now than before the pandemic began. According to new data released Thursday, U.S. colleges and universities saw a drop of nearly 500,000 undergraduate students in the fall of 2021, continuing a historic decline that began the previous fall.

“It’s very frightening,” says Doug Shapiro, who leads the research center at the National Student Clearinghouse, where the new data comes from. “Far from filling the hole of [2020’s] enrollment declines, we are still digging it deeper.”