For the second time this week, the Douglas County School District has asked dozens of people to quarantine at Legend High School after learning of another positive COVID-19 case at the school.
A letter sent on Sept. 18 told 73 people that they should quarantine through Sept. 28 and can return to school on or after Sept. 29.
The school had asked another 88 people to quarantine starting on Sept. 14. They can return to school on or after Sept. 28, depending on their cohort schedule.
The letters stressed to individuals in quarantine that if they choose to get tested for the novel virus, a negative test result will not release them from quarantine.
“Please know that a negative test result only means that you did not have the virus detected at the time of testing,” the letters said.
On Sept. 6, the Parker school asked 174 people at Legend to quarantine following two other positive cases at the school.
A district spokesman said the health department had not declared an outbreak at the school as of Sept. 18.
Dozens of other people were quarantined at other district schools two days later.
More than 40 people were asked to quarantine at Chaparral High School on Sept. 15. 
The district on Sept. 8 notified 100 people at Sierra Middle School in Parker that they needed to quarantine after two individuals at the school developed symptoms common of COVID-19.
The district asked another 93 people to quarantine at Douglas County High School in Castle Rock that same day after confirming a positive case at the school.
This was not Douglas County High School’s first brush with a sizeable quarantining incident either. The district on Aug. 27 asked 114 students and 20 staff to quarantine after someone who had contact with various classrooms tested positive.
Between Aug. 31 and Sept. 8, at least eight other schools were affected by quarantines although a district spokesman said fewer than 10 people were quarantined in each of those instances.
Public records show the impact of COVID-19 exposures at Douglas County schools has varied widely since students returned on the district’s “hybrid” learning model.
With hybrid learning, students are divided into cohorts and attend school with a mix of in-person and online learning.
In some instances, well more than 100 people have need needed to quarantine after a known or presumed COVID-19 case in a school. In others, only a handful of students and staff were affected.
In one case, a student at Fox Creek Elementary School tested positive, but the district did not ask anyone to quarantine because administrators did not believe the sick child had recent close contact with anyone at the school.
“Thanks to the cautious actions of the parents, this child has not been in our school for over a week and has not exposed anyone else to the virus,” Principal Brian Rodda wrote in a Sept. 4 letter to the school community. “Because of the precautions taken by the student’s parents, there is no action needed by any students or staff in our building.”