Serving 217 students in grades 9-12, Lester R Arnold High School ranks in the bottom 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 ≤10% (which is lower than the Colorado state average of 32%). The percentage of students achieving proficiency in reading/language arts is ≤10% (which is lower than the Colorado state average of 45%).
The student:teacher ratio of 24:1 is higher than the Colorado state level of 15:1.
Minority enrollment is 92% of the student body (majority Hispanic), which is higher than the Colorado state average of 50% (majority Hispanic).
Quick Stats (2025)
- School Type: Alternative school
- Grades: 9-12
- Enrollment: 217 students
- Student:Teacher Ratio: 24:1
- Minority Enrollment: 92%
- Graduation Rate: 25-29% (Btm 50% in CO)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: ≤10% (Btm 50%)
- Reading Proficiency: ≤10% (Btm 50%)
- Science Proficiency: ≤10% (Btm 50%)
- Source: National Center for Education Statistics (NCES), CO Dept. of Education
Top Rankings
Lester R Arnold High School ranks among the top 20% of public schools in Colorado for:
Category
Attribute
Percent Eligible For Free Lunch
Community Size
School Overview
Lester R Arnold High School's student population of 217 students has declined by 20% over five school years.
The teacher population of 9 teachers has declined by 10% over five school years.
School Type
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
217 students
Gender %
Total Classroom Teachers
9 teachers
School Rankings
Lester R Arnold High School ranks within the bottom 50% of all 1,779 schools in Colorado (based off of combined math and reading proficiency testing data).
The diversity score of Lester R Arnold High School is 0.22, 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
#1710 out of 1779 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
≤10%
32%
Reading/Language Arts Test Scores (% Proficient)
≤10%
45%
Science Test Scores (% Proficient)
(20-21)≤10%
29%
Student : Teacher Ratio
24:1
15:1
American Indian
2%
1%
Asian
n/a
3%
Hispanic
88%
36%
Black
1%
5%
White
8%
50%
Hawaiian
n/a
n/a
Two or more races
1%
5%
All Ethnic Groups
Graduation Rate
25-29%
82%
Eligible for Free Lunch
77%
39%
Eligible for Reduced Lunch
7%
6%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CO Dept. of Education
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Lester R Arnold High School's ranking?
Lester R Arnold High School is ranked #1710 out of 1,779 schools, which ranks it among the bottom 50% of public schools in Colorado.
What schools are Lester R Arnold High School often compared to?
Lester R Arnold High Schoolis often viewed alongside schools like Adams City High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
≤10% of students have achieved math proficiency (compared to the 32% CO state average), while ≤10% of students have achieved reading proficiency (compared to the 45% CO state average).
What is the graduation rate of Lester R Arnold High School?
The graduation rate of Lester R Arnold High School is 25-29%, which is lower than the Colorado state average of 82%.
How many students attend Lester R Arnold High School?
217 students attend Lester R Arnold High School.
What is the racial composition of the student body?
88% of Lester R Arnold High School students are Hispanic, 8% of students are White, 2% of students are American Indian, 1% of students are Black, and 1% of students are Two or more races.
What is the student:teacher ratio of Lester R Arnold High School?
Lester R Arnold High School has a student ration of 24:1, which is higher than the Colorado state average of 15:1.
What grades does Lester R Arnold High School offer ?
Lester R Arnold High School offers enrollment in grades 9-12 (No virtual instruction).
What school district is Lester R Arnold High School part of?
Lester R Arnold High School is part of School District N. 14 In The County Of Adams & State Of Colo.
School Reviews
5 7/30/2013
I love the whole concept of this school.
5 9/26/2007
The best school i have ever went to!!!
Review Lester R Arnold High School. Reviews should be a few sentences in length. Please include any comments on:
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