Serving 774 students in grades Prekindergarten-8, Addenbrooke Classical Grammar School ranks in the top 50% 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 38% (which is higher than the Colorado state average of 33%). The percentage of students achieving proficiency in reading/language arts is 43% (which is lower than the Colorado state average of 45%).
The student-teacher ratio of 17:1 is higher than the Colorado state level of 15:1.
Minority enrollment is 38% of the student body (majority Hispanic), which is lower than the Colorado state average of 51% (majority Hispanic).
Quick Facts (2026)
- School Type: Charter School
- Grades: Prekindergarten-8
- Enrollment: 774 students
- Student-Teacher Ratio: 17:1
- Minority Enrollment: 38%
- Overall Testing Rank: Top 50% in CO
- Math Proficiency: 38% (Top 50%)
- Reading Proficiency: 43% (Top 50%)
- Source: National Center for Education Statistics (NCES), CO Dept. of Education
School Overview
Addenbrooke Classical Grammar School's student population of 774 students has grown by 77% over five school years.
The teacher population of 45 teachers has grown by 80% over five school years.
School Type
Grades Offered
Grades Prekindergarten-8
(No virtual instruction)
(No virtual instruction)
Total Students
774 students
Total Classroom Teachers
45 teachers
Year Founded
2015
Average Class Size
15 students
School Rankings
Addenbrooke Classical Grammar School ranks within the top 50% of all 1,748 schools in Colorado (based off of combined math and reading proficiency testing data).
The diversity score of Addenbrooke Classical Grammar School is 0.53, 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
#735 out of 1748 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
38%
33%
Reading/Language Arts Test Scores (% Proficient)
43%
45%
Student-Teacher Ratio
17:1
15:1
American Indian
n/a
1%
Asian
4%
3%
Hispanic
30%
37%
Black
1%
5%
White
62%
49%
Hawaiian
n/a
n/a
Two or more races
3%
5%
All Ethnic Groups
Eligible for Free Lunch
7%
39%
Eligible for Reduced Lunch
2%
5%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CO Dept. of Education
Frequently Asked Questions
What is Addenbrooke Classical Grammar School's ranking?
Addenbrooke Classical Grammar School is ranked #735 out of 1,748 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?
38% of students have achieved math proficiency (compared to the 33% CO state average), while 43% of students have achieved reading proficiency (compared to the 45% CO state average).
How many students attend Addenbrooke Classical Grammar School?
774 students attend Addenbrooke Classical Grammar School.
What is the racial composition of the student body?
62% of Addenbrooke Classical Grammar School students are White, 30% of students are Hispanic, 4% of students are Asian, 3% of students are Two or more races, and 1% of students are Black.
What is the student-teacher ratio of Addenbrooke Classical Grammar School?
Addenbrooke Classical Grammar School has a student ration of 17:1, which is higher than the Colorado state average of 15:1.
What grades does Addenbrooke Classical Grammar School offer ?
Addenbrooke Classical Grammar School offers enrollment in grades Prekindergarten-8 (No virtual instruction).
What school district is Addenbrooke Classical Grammar School part of?
Addenbrooke Classical Grammar School is part of Jefferson County School District No. R-1.
In what neighborhood is Addenbrooke Classical Grammar School located?
Addenbrooke Classical Grammar School is located in the Academy Park neighborhood of Denver, CO. There are 1 other public schools located in Academy Park.
School Reviews
Review Addenbrooke Classical Grammar School. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
Recent Articles
AI Report Cards: Should Schools Evaluate AI Use?
Explore whether schools should assess student AI use, the benefits, risks, and what responsible AI report cards could look like in 2026.
The Parent’s Guide to School Cell Phone Bans in 2026
Learn how school cell phone bans work in 2026, why districts are adopting them, and what parents should expect.
Parental Involvement in Public Schools: 2026 Update
Explore the latest 2026 trends, research, and strategies shaping parental involvement in public schools and student success.
