Carroll County's coronavirus test positivity rate has dropped below the threshold at which schools can request to go fully online, and there were just four Carroll Community students as of Monday night who currently were infected.
The number of infected students is down from a high of 15 a week ago, but there still are 128 students who are in quarantine at home because they had close contact with someone who is infected.
The number of quarantined students is down from a high of 187 a week ago.
Carroll High School switched to part-time classes two weeks ago — with two groups of students attending in-person class on alternating days — but it's unclear how that has affected overall student infections.
Similar data for the Kuemper school system was not immediately available.
The county has reported a further 38 confirmed cases since Friday, which took its total to 559, but the percentage of positive tests over the past two weeks has dropped to 13.4 percent, which is the first time since the beginning of school that the rate has been below 15 percent.
The rate is a calculation that compares the number of positive tests with the total number of tests over a 14-day period. At 15 percent, school can request to go online if their student absent rate exceeds 10 percent.
Carroll County neared but never exceeded a 20-percent test positivity rate, which is the threshold to request online classes regardless of the student absent rate.
As of Monday night there were two Carroll Community staff members with a current infection, and 11 were in quarantine.