As COVID-19 cases continue to surge in the state and across the country, some Arizona students are temporarily returning to virtual learning.

About a dozen classrooms in the Deer Valley Unified School District have temporarily gone virtual for days at a time since last Monday, the district said. 

The Casa Grande Elementary School District in Pinal County has canceled in-person classes at three of its school sites — Cactus Middle School, Village Middle School and its Early Childhood Learning Center — through Jan. 21 due to COVID-19 staffing absences. 

"While health and safety of all continues to be our priority, much of that is supported with adequate staff on site. At this time, due to our COVID related staffing absences, we cannot host in-person learning," Villago and Cactus middle schools said in Facebook posts. 

And the San Carlos Unified School District has shifted its entire district to online through next week. 

But public schools aren’t the only ones impacted. 

Rancho Solano Preparatory, a Scottsdale private school, has moved its middle and high school students to virtual starting Wednesday through Jan. 21, since a number of students and teachers are out to COVID-19, and a number of teachers are under quarantine. 

"We have exhausted our entire substitute list and even though we have managed to cover everything we know students do not receive the best education with substitute teachers in the classroom," the school said in a statement. "To provide the best opportunity for teachers to have direct educational contact with students we need to be adaptive and proactive for our students." 

Rancho Solano is also temporarily requiring masks for students in its lower grade levels and said at the moment it doesn't have plans to move them to distance learning since it's "not conducive for younger children."