5:20 p.m.: CPS positivity rate rises to 12.5 The Columbia Public Schools 14-day case rate per 10,000 people is at 12.5. The updated CPS student tracker shows 155 students in the district currently in quarantine and 10 active student cases. The district has seen 3,486 quarantined student cases and 653 positive student cases since June 2020. The updated CPS staff tracker also shows 13 staff members currently in quarantine and 2 active staff cases. 1 staff members are out due to EFMLA laws. The tracker also shows 61.3% of CPS staff members have been vaccinated. Â 5:00 p.m.: Over a quarter of Boone Countians have completed vaccination The Columbia/Boone County Department of Public Health & Human Services reported 20 new COVID-19 cases in the past 24 hours, bringing the total number of active cases to 108.