Martensen Elementary School serves 240 students in grades Prekindergarten-6.
The percentage of students achieving proficiency in math was 85-89% (which was higher than the Colorado state average of 82%). The percentage of students achieving proficiency in reading/language arts was 85-89% (which was approximately equal to the Colorado state average of 89%).
The student-teacher ratio of 14:1 was lower than the Colorado state level of 15:1.
Minority enrollment was 58% of the student body (majority Hispanic), which was higher than the Colorado state average of 50% (majority Hispanic).
School Overview
Grades Offered
Grades Prekindergarten-6
Total Students
240 students
Total Classroom Teachers
17 teachers
School Rankings
Math Test Scores (% Proficient)
(10-11)85-89%
82%
Reading/Language Arts Test Scores (% Proficient)
(10-11)85-89%
89%
Student-Teacher Ratio
14:1
15:1
American Indian
3%
1%
Asian
1%
3%
Hispanic
48%
36%
Black
1%
5%
White
42%
50%
Hawaiian
n/a
n/a
Two or more races
5%
5%
All Ethnic Groups
Eligible for Free Lunch
57%
39%
Eligible for Reduced Lunch
9%
6%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CO Dept. of Education
Frequently Asked Questions
What percent of students have achieved state testing proficiency in math and reading?
85-89% of students have achieved math proficiency (compared to the 82% CO state average), while 85-89% of students have achieved reading proficiency (compared to the 89% CO state average).
How many students attend Martensen Elementary School?
240 students attend Martensen Elementary School.
What is the racial composition of the student body?
48% of Martensen Elementary School students are Hispanic, 42% of students are White, 5% of students are Two or more races, 3% of students are American Indian, 1% of students are Asian, and 1% of students are Black.
What is the student-teacher ratio of Martensen Elementary School?
Martensen Elementary School has a student ration of 14:1, which is lower than the Colorado state average of 15:1.
What grades does Martensen Elementary School offer ?
Martensen Elementary School offers enrollment in grades Prekindergarten-6
What school district is Martensen Elementary School part of?
Martensen Elementary School is part of Jefferson County School District No. R-1.
Recent Articles
2025 Classroom Size Trends: Are Classes Still Growing?
A 2025 update on U.S. classroom sizes, policy battles, student outcomes, and whether class sizes continue to expand.
Personalized Learning in 2025: Revolutionizing Education
Explore how personalized learning is reshaping education in 2025—insights, policy, impact, and real-world models for students, parents, and educators.
How Bullying Impacts Student Academic Performance in 2025
Explore how bullying harms student achievement, attendance, and well-being — and strategies schools use in 2025 to mitigate its effects.
