Only four states—Idaho, Iowa, Nebraska and Maine—have any public schools remaining open as the coronavirus pandemic has forced millions of students out of their schools.

Education Week reports that as of Monday night, March 23, 46 states have closed all their schools in response to the coronavirus.

The closures have canceled classes for at least 123,000 U.S. public and private schools. At least 54.8 million school students have been affected.

The United States has more than 98,000 public schools and at least 34,000 private schools, according to the National Center for Education Statistics

Almost 50.8 million students are enrolled in public schools and 5.8 million in private schools.