Published December 14, 2020 • Updated on December 15, 2020 at 4:34 am NBC 5 News Three campuses in the Sanger Independent School District will go virtual through the end of the week after a spike in COVID-19 cases that resulted in a high number of students and staff members being forced to quarantine, according to a district letter. Butterfield Elementary School, Chisholm Trail Elementary School and Clear Creek Intermediate School will close through Friday for deep cleaning, the letter says. Sanger ISD's Sixth Grade Center, Sanger Middle School, Linda Tutt High School and Sanger High School will remain open for in-person instruction. Students and staff of the closed campuses will move to online learning starting Tuesday and will not miss any instructional time, the district said.