St. Gregory Catholic Elementary School in Zelienople is moving to virtual learning from Tuesday through Friday this week due to staff members testing positive for COVID-19.

The school teaches students from pre-school through eighth grade.

“Although we seemed to have conquered the odds and provided in-person learning for over a year and a half through this pandemic, I am afraid that we are not invincible, and COVID has finally forced me to make some difficult decisions,” principal Erin Rice said in a letter sent to parents.

Seven staff members have tested positive, according to a release from the Catholic Diocese of Pittsburgh. Rice said she attempted to find substitute teachers but was not able to secure enough teachers to cover the critical need.