Denver Public Schools is changing course again on whether to reopen schools next month: The district on Friday said it will now start the school year remotely.

Coronavirus cases are on the rise in Colorado, and both teachers and parents expressed serious concerns about students returning to school in person.

Denver Public Schools plans to start school Aug. 24 and won’t return to school buildings until at least Sept. 8. Superintendent Susana Cordova said the district has asked local health experts to help identify the conditions under which it would be safe to do so.

“We’re anxious to get our kids back in school,” Cordova said, “and we all need to do our part to help drive down the spread of the virus.”