By far the most impressive list of marks has to be from the Bromfield School in Harvard, MA. It's 7-12 school with 750 students. Note that Massachusetts runs the mile, not some stupid 1600.
Ari Lambie 4:37
Lynn Jennings 4:39i
Emily Jones 4:54i
Liz Lee 5:10
Total: 19:20
Other schools from MA (with much larger enrollments)
Newton South
Clare Martin 4:48
Lucy Jenks 4:49i
Kathy O'Keefe 4:52i
Bridget Dahlberg 4:53
Total: 19:22
Lincoln-Sudbury
Lindsay Donaldson 4:46
Ariel Keklak 4:49
Andrea Keklak 4:49i
Marika Crowe 5:00
Total: 19:25