One person at Beamsville District Secondary School has tested positive for COVID-19.
The DSBN says staff and students who had close contact with the individual have been advised by public health to self-isolate at home.
The school will receive a thorough cleaning, and a Public Health Nurse and a Public Health Inspector will visit the premises.
It's not known if the individual is a staff member or a student.

Port Colborne Mulls Over Recycling Options
Councillor Concerned for Homeless in Winter
Beamsville Man Wins Lottery
Police Looking for Murder Suspect
NRP Recover Stolen Vehicles
Whales 'Holding Steady' at Marineland
Huge Donation Made to Hospital
School Bus Employee Charged by Police