Nearly one in five students in Greenville County Schools had a failing grade in at least one class for the third quarter of the school year, the district reported at a board meeting Tuesday. The number of failing grades is slightly lower than what GCS reported for the second quarter, but it still shows a lag in grades among the district's 74,000 students while challenges brought on by the COVID-19 pandemic persist. Compared to the district's estimated 52,000 in-person students, a higher rate of its 22,000 virtual students had failing grades. But virtual students had a larger drop in failing grades during the third quarter than their in-person peers.