The runners in the relay don't have to be in the same year. Just put together the best 4 runners your school has ever had.
The times I have below are for 1600, not the full mile.
I'll start:
Glenbard West HS, IL for Girls
Lindsey Payne 4:58 (2016)
Katelynne Hart 4:43 (2018)
Madeline Perez 4:53 (2013)
Lindsay Graham 5:01 (2015)
Total Time: 19:35
National Record: 19:56
York HS, IL for Boys
Donald Sage 3:58 (2000)
Jim White 4:07 (1985)
Charlie Kern Jr. 4:11 (2017)
Jack Driggs 4:13 (2011)
Total Time: 16:29
National Record: 16:41