Top Rankings
Jefferson County School District No. R-1 ranks among the top 20% of public school district in Colorado for:
Category
Attribute
Overall Rank
Highest overall rank (Top 20%)
Math Proficiency
Highest math proficiency (Top 20%)
Reading/Language Arts Proficiency
Highest reading/language arts proficiency (Top 20%)
Graduation Rate
Highest graduation rate (Top 20%)
Community Size
Largest student body (number of students) (Top 1%)
For the 2026 school year, there are 143 public schools serving 73,532 students in Jefferson County School District No. R-1. This district's average testing ranking is 9/10, which is in the top 20% of public schools in Colorado.
Public Schools in Jefferson County School District No. R-1 have an average math proficiency score of 41% (versus the Colorado public school average of 33%), and reading proficiency score of 55% (versus the 45% statewide average).
Minority enrollment is 36% of the student body (majority Hispanic), which is less than the Colorado public school average of 51% (majority Hispanic).
Overview
This School District
This State (CO)
# Schools
144 Schools
1,898 Schools
# Students
73,532 Students
865,055 Students
# Teachers
4,361 Teachers
52,637 Teachers
Student-Teacher Ratio
17:1
17:1
Student By Grade
District Rank
Jefferson County School District No. R-1, which is ranked within the top 20% of all 176 school districts in Colorado (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.
The school district's graduation rate of 87% has increased from 85% over five school years.
Overall District Rank
#25 out of 179 school districts
(Top 20%)
(Top 20%)
Math Test Scores (% Proficient)
40%
33%
Reading/Language Arts Test Scores (% Proficient)
52%
45%
Science Test Scores (% Proficient)
(20-21)35%
29%
Graduation Rate
87%
82%