WAUWATOSA, Wis. (CBS 58) -- The Wauwatosa School District will switch to virtual instruction from Monday, Nov. 23 through Friday, Dec. 4 due to quarantines and positive COVID-19 cases among teachers. Students will follow the hybrid schedule during this time. 

Monday, Dec. 7, Phase Into Learning students will return to the hybrid phase. 

According to a release, they've experienced operation staffing challenges across the district and are magnified by a nationwide substitute teacher shortage. 

The district is encouraging its families to be safe over the Thanksgiving holiday. 

"It is our hope that those who choose to connect with others outside their household during the break will use this time after the holiday as an opportunity to self-quarantine, monitor for symptoms and, if necessary, get tested for COVID-19 so we can continue to minimize the spread in our buildings and the lessen impact of quarantines on our operations when we return on December 7, 2020. We believe this time away from in-person instruction will reduce the number of students and staff who need to be quarantined, allowing us to more effectively staff full classrooms and keep our schools operating in the hybrid phase."