13.
School: Johnston, IA
Analysis: Johnston is among Iowa's finest programs in 2017 and will challenge for another title after winning the Iowa High School Athletic Association Class 4A championship a year ago. They return four of five after finishing fifth at the NXN Heartland Region.
| Flo50 Rankings Timetable | |||
| Aug. 19 | Aug. 22 | 10 | |
| Aug. 19 | Aug. 23 | 9 | |
| Aug. 19 | Aug. 24 | 8 | |
| Aug. 19 | Aug. 25 | 7 | |
| Aug. 19 | Aug. 26 | 6 | |
| Aug. 20 | Aug. 27 | 5 | |
| Aug. 20 | Aug. 28 | 4 | |
| Aug. 20 | Aug. 29 | 3 | |
| Aug. 20 | Aug. 30 | 2 | |
| Aug. 20 | Aug. 31 | 1 | |
| Aug. 21 | Sept. 1 | Final Rankings | |
| Aug. 21 | |||
| Aug. 21 | |||
| Aug. 21 | |||
| Aug. 21 | |||