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 1,268 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 47% of the student body (majority Hispanic), which is lower than the Colorado state average of 51% (majority Hispanic).
Quick Facts (26-27)
- Grades: 9-12
- Enrollment: 1,268 students
- Student-Teacher Ratio: 20:1
- Minority Enrollment: 47%
- 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%)
- Attendance Zone: Longmont High School serves the northeast part of Longmont, CO, covering an attendance zone of approximately 29.2 square miles. Families can expect a typical drive of about 10-12 minutes to the school, with the furthest edge of the zone located up to 7 miles away.
- 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 1,268 students has stayed relatively flat over five school years.
The teacher population of 63 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
1,268 students
Showing 2015–2025. Full 39-year historical data available below ↓
Total Classroom Teachers
63 teachers
Showing 2015–2025. Full 39-year historical data available below ↓
Year Founded
1901
School Calendar
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 0.63. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#511 out of 1748 schools
(Top 30%)
(Top 30%)
Showing 2013–2023. Full 14-year historical data available below ↓
Math Test Scores (% Proficient)
36%
33%
Showing 2013–2023. Full 14-year historical data available below ↓
Reading/Language Arts Test Scores (% Proficient)
62%
45%
Showing 2012–2022. Full 13-year historical data available below ↓
Science Test Scores (% Proficient)
(20-21)29%
29%
Student-Teacher Ratio
20:1
15:1
Showing 2015–2025. Full 39-year historical data available below ↓
Asian
1%
3%
Showing 2015–2025. Full 38-year historical data available below ↓
Hispanic
41%
37%
Showing 2015–2025. Full 38-year historical data available below ↓
Black
1%
5%
Showing 2015–2025. Full 37-year historical data available below ↓
White
53%
49%
Showing 2015–2025. Full 38-year historical data available below ↓
Two or more races
4%
5%
Showing 2015–2025. Full 14-year historical data available below ↓
All Ethnic Groups
Showing 2015–2025. Full 38-year historical data available below ↓
Graduation Rate
94%
82.7%
Showing 2014–2023. Full 13-year historical data available below ↓
Chronically Absent Students
(22-23)36.8%
33.6%
Eligible for Free Lunch
39%
39%
Showing 2015–2025. Full 37-year historical data available below ↓
Eligible for Reduced Lunch
9%
5%
Showing 2015–2025. Full 26-year historical data available below ↓
School Statewide Testing
School District Name
Sports
School Mascot
Trojan
Source: National Center for Education Statistics (NCES), CO Dept. of Education
Profile last updated:
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 82.7%.
How many students attend Longmont High School?
1,268 students attend Longmont High School.
What is the racial composition of the student body?
53% of Longmont High School students are White, 41% of students are Hispanic, 4% of students are Two or more races, 1% 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 10/10/2025
Fantastic school, I loved it. And in a great district as well
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