Grass Valley School District campuses will return to a distance learning instructional format Monday, district superintendent Andrew Withers confirmed. The district began the academic year with distance learning in August, and had opened its campuses for hybrid instruction districtwide Nov. 2. Withers announced the decision Wednesday night in an email addressed to district staff, parents, and other community members. The message referenced a recent increase in COVID-19 cases in Nevada County as documented by the county Coronavirus Dashboard, as well as the Greater Sacramento region falling under the threshold of 15% ICU availability this week, triggering a regional stay-at-home order applicable to Nevada County.