Class 3A Colorado high schools
Class 3A Leagues
| Frontier |
| The Academy High School |
Arrupe Jesuit High School |
| Bennett High School |
Clear Creek High School |
| Denver School of Science and Tech |
Jefferson Academy High School |
| Lake County High School |
Middle Park High School |
| The Pinnacle |
Platte Canyon High School |
| Sheridan High School |
|
| Intermountain |
| Bayfield High School |
Centauri High School |
| Monte Vista High School |
Pagosa Springs High School |
| Metropolitan |
| Colorado Academy |
Denver Christian |
| Faith Christian |
Holy Family
|
| Kent Denver |
Lookout Academy |
| Lutheran-Denver High School |
Machebuef High School |
| Manual High School |
Peak to Peak Charter |
| St. Mary's Academy |
|
|
Mile High
|
| Denver Academy |
|
| Northern Front Range |
| Brighton Collegiate |
|
| Patriot |
| Brush High School |
Eaton High School |
| Erie High School |
Estes Park High School |
| Highland High School |
Lyons High School |
| Platte Valley High School |
Strasburg High School |
| University High School |
Valley High School |
| Weld Central High School |
Yuma High School |
| Pioneer |
| Discovery Canyon High School |
Legend High School |
| Tri-Peaks |
| Buena Vista High School |
The Classical Academy |
| Colorado Springs Christian School |
Dolores Huerta High School |
| Ellicott High School |
Florence High School |
| James Irwin High School |
La Junta High School |
| Lamar High School |
Manitou Springs High School |
| Peyton High School |
Rye High School |
| Salida High School |
St. Mary's Colorado Springs |
| Trinidad High School |
|
| Western Slope |
| Aspen High School |
Basalt High School |
| Cedaredge High School |
Coal Ridge High School |
| Grand Valley High School |
Gunnison High School |
| Hotchkiss High School |
Olathe High School |
| Roaring Fork High School |
|
| Independent Schools |
| Bruce Randolph High School |
|
