The 8/24 stats was when there was no mask mandate. Obviously, 9/27 are with mask mandates (except for TV and Marana has an easy out from masks). As you'll see, there is no statistical significance in covid cases when comparing no mask mandate to having a mask mandate.
Amphi
https://www.amphi.com/Page/22755
8/24 - 4 of 1955 amphi employees has covid, .20%
49 out of 12,100 students have covid, .40%
9/27 - 3 employees, 19 students have covid
Catalina Foothills
https://www.cfsd16.org/reopening-school/cfsd-covid-19-dashboard
8 out of 6108 catalina foothills staff and students have covid, .13%
9/27 - 4 out of 6108
Marana USD
https://www.maranausd.org/coviddashboard
1.3% of marana's student's and staff have covid; 173 of 14,332
9/27 - 32 out of 14,332
Vail USD
https://vailschooldistrict.org/school-opening-and-covid-19-information/#1610490966433-ac3d7229-86aa
vail usd has 37 students with covid and 6 staff with covid
9/27 - 22 students and 7 staffers
Flowing Wells
1 of 656 flowing wells staffers has covid, .15% of staff
19 of 5633 students has covid, .34%
9/27 - 17 total cases for students and staff
Sunnyside
https://susd12.org/districtwide-covid-cases
sunnyside USD has 8 staffers with covid and 58 students with covid
9/27 - 2 staff and 51 students
Tanque Verde
https://www.tanqueverdeschools.org/COVID-19Information.aspx
5 out of 2189 students has covid, .23%
9/27 - 1 case out of 2189 students (never had a mask mandate)