Just days after a Mississippi school superintendent pleaded with parents to stop allowing students to socially gather on the weekends and spread the COVID-19 coronavirus, a Mississippi high school has shut down in-person classes after hundreds of students are quarantined due to exposure to the virus.

Biloxi High School reports that 15 students have tested positive for the virus and due to contact tracing 324 more students are in quarantine after coming in contact with someone with the virus.

The school is switching to distance learning and includes the shutdown of extracurricular activities such as sports.

Other schools in the district will remain open.

The change comes after Superintendent Marcus Boudreaux sent a letter to parents begging them to stop allowing students to mingle with one another at weekend social events.

“While the school cannot control such activities, they are the driving factor that could result in a physical shut down of the school, athletics, and activities,” Boudreaux wrote. “We are begging for your help to prevent such an outcome. The efforts made during the school day to keep students socially distanced, masked up, and healthy are all negated with a few choices during the weekend.”