Serving 324 students in grades 7-12, Jefferson County Open Secondary ranks in the top 50% of all schools in Colorado for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 20-24% (which is lower than the Colorado state average of 32%). The percentage of students achieving proficiency in reading/language arts is 50-54% (which is higher than the Colorado state average of 45%).
The student:teacher ratio of 15:1 is equal to the Colorado state level of 15:1.
Minority enrollment is 25% of the student body (majority Hispanic), which is lower than the Colorado state average of 50% (majority Hispanic).
Quick Stats (2025)
- Grades: 7-12
- Enrollment: 324 students
- Student:Teacher Ratio: 15:1
- Minority Enrollment: 25%
- Graduation Rate: 40-49% (Btm 50% in CO)
- Overall Testing Rank: Top 50%
- Math Proficiency: 20-24% (Btm 50%)
- Reading Proficiency: 50-54% (Top 30%)
- Science Proficiency: 20-24% (Btm 50%)
- Source: National Center for Education Statistics (NCES), CO Dept. of Education
School Overview
Jefferson County Open Secondary's student population of 324 students has stayed relatively flat over five school years.
The teacher population of 22 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 7-12
Total Students
324 students
Gender %
Total Classroom Teachers
22 teachers
Students by Grade
School Calendar
School Rankings
Jefferson County Open Secondary ranks within the top 50% of all 1,779 schools in Colorado (based off of combined math and reading proficiency testing data).
The diversity score of Jefferson County Open Secondary is 0.41, which is less than the diversity score at state average of 0.62. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#801 out of 1779 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
20-24%
32%
Reading/Language Arts Test Scores (% Proficient)
50-54%
45%
Science Test Scores (% Proficient)
(20-21)20-24%
29%
Student : Teacher Ratio
15:1
15:1
American Indian
n/a
1%
Asian
1%
3%
Hispanic
16%
36%
Black
n/a
5%
White
75%
50%
Hawaiian
n/a
n/a
Two or more races
8%
5%
All Ethnic Groups
Graduation Rate
40-49%
82%
Eligible for Free Lunch
24%
39%
Eligible for Reduced Lunch
10%
6%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CO Dept. of Education
Frequently Asked Questions
What is Jefferson County Open Secondary's ranking?
Jefferson County Open Secondary is ranked #801 out of 1,779 schools, which ranks it among the top 50% of public schools in Colorado.
What percent of students have achieved state testing proficiency in math and reading?
20-24% of students have achieved math proficiency (compared to the 32% CO state average), while 50-54% of students have achieved reading proficiency (compared to the 45% CO state average).
What is the graduation rate of Jefferson County Open Secondary?
The graduation rate of Jefferson County Open Secondary is 40-49%, which is lower than the Colorado state average of 82%.
How many students attend Jefferson County Open Secondary?
324 students attend Jefferson County Open Secondary.
What is the racial composition of the student body?
75% of Jefferson County Open Secondary students are White, 16% of students are Hispanic, 8% of students are Two or more races, and 1% of students are Asian.
What is the student:teacher ratio of Jefferson County Open Secondary?
Jefferson County Open Secondary has a student ration of 15:1, which is equal to the Colorado state average of 15:1.
What grades does Jefferson County Open Secondary offer ?
Jefferson County Open Secondary offers enrollment in grades 7-12
What school district is Jefferson County Open Secondary part of?
Jefferson County Open Secondary is part of Jefferson County School District No. R-1.
In what neighborhood is Jefferson County Open Secondary located?
Jefferson County Open Secondary is located in the Eiber neighborhood of Denver, CO. There are 2 other public schools located in Eiber.
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