Longmont High School is the original high school of the city of Longmont, Colorado, United States, and opened its doors to students in 1901. The school is located in central Longmont and serves as a high school for the St. Vrain Valley School District.
Serving 1,254 students in grades 9-12, Longmont High School ranks in the top 30% of all schools in Colorado for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 36% (which is higher than the Colorado state average of 33%). The percentage of students achieving proficiency in reading/language arts is 62% (which is higher than the Colorado state average of 45%).
The student-teacher ratio of 20:1 is higher than the Colorado state level of 15:1.
Minority enrollment is 45% of the student body (majority Hispanic), which is lower than the Colorado state average of 50% (majority Hispanic).
Quick Facts (2025)
- Grades: 9-12
- Enrollment: 1,254 students
- Student-Teacher Ratio: 20:1
- Minority Enrollment: 45%
- Graduation Rate: 94% (Top 20% in CO)
- Overall Testing Rank: Top 30%
- Math Proficiency: 36% (Top 50%)
- Reading Proficiency: 62% (Top 20%)
- Science Proficiency: 29% (Top 50%)
- Source: National Center for Education Statistics (NCES), CO Dept. of Education
Top Rankings
Longmont High School ranks among the top 20% of public schools in Colorado for:
Category
Attribute
Most improved public schools
Reading/Language Arts Proficiency
Graduation Rate
School Overview
Longmont High School's student population of 1,254 students has stayed relatively flat over five school years.
The teacher population of 64 teachers has grown by 6% over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
1,254 students
Gender %
Total Classroom Teachers
64 teachers
Year Founded
1901
School Calendar
Last Day of School
Mon. May 25, 2026
School Motto
Truth and Honor
School Rankings
Longmont High School ranks within the top 30% of all 1,748 schools in Colorado (based off of combined math and reading proficiency testing data).
The diversity score of Longmont High School is 0.55, 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
#511 out of 1748 schools
(Top 30%)
(Top 30%)
Math Test Scores (% Proficient)
36%
33%
Reading/Language Arts Test Scores (% Proficient)
62%
45%
Science Test Scores (% Proficient)
(20-21)29%
29%
Student-Teacher Ratio
20:1
15:1
American Indian
n/a
1%
Asian
2%
3%
Hispanic
39%
36%
Black
1%
5%
White
55%
50%
Hawaiian
n/a
n/a
Two or more races
3%
5%
All Ethnic Groups
Graduation Rate
94%
82%
Eligible for Free Lunch
35%
39%
Eligible for Reduced Lunch
8%
6%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CO Dept. of Education
School Notes
- School Mascot: Trojan
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Longmont High School's ranking?
Longmont High School is ranked #511 out of 1,748 schools, which ranks it among the top 30% of public schools in Colorado.
What schools are Longmont High School often compared to?
Longmont High Schoolis often viewed alongside schools like Silver Creek High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
36% of students have achieved math proficiency (compared to the 33% CO state average), while 62% of students have achieved reading proficiency (compared to the 45% CO state average).
What is the graduation rate of Longmont High School?
The graduation rate of Longmont High School is 94%, which is higher than the Colorado state average of 82%.
How many students attend Longmont High School?
1,254 students attend Longmont High School.
What is the racial composition of the student body?
55% of Longmont High School students are White, 39% of students are Hispanic, 3% of students are Two or more races, 2% of students are Asian, and 1% of students are Black.
What is the student-teacher ratio of Longmont High School?
Longmont High School has a student ration of 20:1, which is higher than the Colorado state average of 15:1.
What grades does Longmont High School offer ?
Longmont High School offers enrollment in grades 9-12 (No virtual instruction).
What school district is Longmont High School part of?
Longmont High School is part of St. Vrain Valley School District No. Re1j.
School Reviews
5 6/22/2015
Fantastic school, I loved it. And in a great district as well
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