Enrollment
191
High
DISTRICT 847 · STATE 627
SCHOOL COMMUNITY·JEFFERSON COUNTY SCHOOL DISTRICT NO. R-1·NCES 080480006587
Addenbrooke Classical Academy
3605 S TELLER STREET, LAKEWOOD, CO 80235 · (303) 989-1336 · Jefferson County
GRADES 09–12HIGH21-SUBURBCHARTERREGULAR SCHOOL191 STUDENTS
·
allk12 Grade
Not graded
This school has no state test results for 2023-24 or 2024-25 to grade, which is common for schools that end before third grade. How grades work
Student : Teacher
12.3:1
16 FTE teachers
DISTRICT 16.9:1 · STATE 16.9:1
Free / Reduced Lunch
26%
49 students
DISTRICT 35% · STATE 50%
Community
0
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 49 | 26% |
| Grade 10 | 57 | 30% |
| Grade 11 | 41 | 21% |
| Grade 12 | 44 | 23% |
Student demographics
56%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 52% · STATE 62% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
QUIET COMMUNITY
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START A DISCUSSIONBeatsExpectations
Demographically-adjusted score · methodologyTier
UNDERPERFORMING
Bottom 10% of CO schools after controlling for student poverty
Actual proficiency
12.3%
composite math + reading, all grades
Predicted
51.2%
based on CO schools with similar FRL share
Beats by
-38.9pp
below demographic expectation
What this means: About 12% of students here test proficient in math and reading, below the roughly 51% typical for Colorado schools with a similar share of low-income students. BeatsExpectations compares each school with others at the same poverty level, not by raw scores, so a school lands here when its results trail those comparable schools, which is not the same as having low scores. A higher-scoring school can still fall in this tier if similar schools score higher still.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Addenbrooke Classical Academy
Addenbrooke Classical Academy's state test result (12.3% proficient) is higher than 0 of the 4 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Addenbrooke Classical Academy this school | 191 | 25.7% | 12.3% |
| CIVICA Colorado MILLIKEN | 157 | 26.8% | 30.6% |
| Swallows Charter Academy High School PUEBLO WEST | 178 | 32.0% | 30.8% |
| The STEAD School COMMERCE CITY | 421 | 23.3% | 29.1% |
| Colorado Early Colleges Windsor WINDSOR | 196 | 26.0% | 39.6% |
| Highland High School AULT | 299 | 28.8% | N/A |
Matched among Colorado high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Addenbrooke Classical Academy ranks
Among high schools| Measure | This school | In Colorado | In Jefferson County |
|---|---|---|---|
| State test proficiency ranked highest first | 12.3% | #199 of 231 | #16 of 19 |
| Enrollment ranked largest first | 191 | #253 of 409 | #22 of 28 |
| Free and reduced lunch ranked highest share first | 25.7% | #271 of 320 | #14 of 22 |
| Enrollment change since 2017-18 ranked steepest decline first | -35.7% | #14 of 139 | #2 of 16 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
191
-246 (-56%) vs 2020
Student : Teacher
12.3:1
was 15.6:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 191 | 15.6 | 12.3:1 | 26% (49) |
| 2023-24 | 189 | 11.4 | 16.6:1 | 8% (15) |
| 2022-23 | 201 | 14 | 14.4:1 | N/A |
| 2020-21 | 437 | 28 | 15.6:1 | N/A |
| 2017-18 | 297 | 22 | 13.5:1 | 26% (77) |
| 2015-16 | 192 | 15 | 12.8:1 | 39% (74) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Addenbrooke Classical Academy.
Since 2017-18: students down 36% (297 to 191); teachers down 29% (22 to 15.6).
About Addenbrooke Classical Academy
Addenbrooke Classical Academy is a small high school. Its address is in LAKEWOOD, Colorado. It covers grades 9 through 12, with a total enrollment of 191 students. Enrollment is 70% lower than the average for high schools in Colorado, which is about 627.
Jefferson County School District No. R-1 (148 schools, 74,935 students) runs Addenbrooke Classical Academy.
At 57%, White students outnumber all other groups at Addenbrooke Classical Academy combined. The remaining students are 34% Hispanic, 5% multiracial, and 3% Asian. Among people living in Jefferson County, the White share is about 80%. Addenbrooke Classical Academy has a diversity index of 56%, compared with 70% for all US public school students.
With 15.6 full-time-equivalent teachers in 2024-25, the ratio at Addenbrooke Classical Academy was 12.3:1. Among high schools in Colorado, the typical ratio is 16.9:1. Addenbrooke Classical Academy's free or reduced-price lunch eligibility rate is 26%.
On BeatsExpectations, which compares test results with what a school's student poverty level would predict, Addenbrooke Classical Academy ranks in the bottom 10% in Colorado. Its average proficiency rate on state tests is 12.3%, against a prediction of 51.2%.
Jefferson County census figures show that median household income is about $110,656, a bachelor's degree or higher is held by about 52% of adults, and the share of residents below the poverty line is 4%. A total of 168 public schools operate in Jefferson County, serving about 74,739 students.
The school nearest to Addenbrooke Classical Academy is Addenbrooke Classical Grammar School, at a distance of about 0.4 miles. Within five miles of Addenbrooke Classical Academy, there are at least 8 other public schools. The average proficiency across nearby scored schools is 23.8%; Addenbrooke Classical Academy's is 12.3%, ranking 6th of 7.
The school's setting, by NCES definition, is Suburb: Large: in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more. Addenbrooke Classical Academy is run as a public charter school.
Addenbrooke Classical Academy reported 437 students in 2020-21 and 191 in 2024-25. Changes that large sometimes follow a school adding or dropping grades, so the two figures may not cover the same grades. From 2020-21 to 2024-25, the ratio fell from 15.6:1 to 12.3:1.
The discussion area below is open to posts about school events, clubs, and volunteer needs. Questions from prospective families are welcome too.
Jefferson County at a glance
View full county profilePopulation
579,377
Census ACS
Median income
$110,656
Household, ACS
Bachelor's+
52%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
168
74,739 students
Quick facts
Related schools
Other schools in Jefferson County School District No. R-1
- Arvada West High SchoolHigh · 1,923 students
- Ralston Valley Senior High SchoolHigh · 1,875 students
- Chatfield High SchoolHigh · 1,808 students
- Lakewood High SchoolHigh · 1,735 students
- Columbine High SchoolHigh · 1,710 students
- Golden High SchoolHigh · 1,469 students
Other schools in LAKEWOOD
- Lakewood High SchoolHigh · 1,735 students
- Bear Creek High SchoolHigh · 1,344 students
- Green Mountain High SchoolHigh · 1,071 students
- Alameda International Junior/Senior High SchoolHigh · 1,002 students
- Bear Creek K-8 SchoolElementary · 863 students
- Dunstan Middle SchoolMiddle · 798 students
Nearby schools
- Addenbrooke Classical Grammar School0.4 mi · 774
- Rocky Mountain Youth Services Center0.6 mi · 13
- John F Kennedy High School1.0 mi · 681
- Traylor Academy1.1 mi · 300
- Bear Valley International School1.3 mi · 313
- Westgate Elementary School1.6 mi · 305
Frequently asked questions
About Addenbrooke Classical AcademyHow many students attend Addenbrooke Classical Academy?
Addenbrooke Classical Academy enrolls approximately 191 students in grades 09-12.
What grades does Addenbrooke Classical Academy serve?
Addenbrooke Classical Academy serves grades 09-12.
How many students per teacher at Addenbrooke Classical Academy?
Approximately 12.3:1 students per teacher at Addenbrooke Classical Academy.
How diverse is Addenbrooke Classical Academy?
Addenbrooke Classical Academy reports a student body of 57% White, 34% Hispanic, 1% Black, 3% Asian, 5% Two or more.
Is Addenbrooke Classical Academy public or private?
Addenbrooke Classical Academy is a public K-12 school operated as a charter, overseen by Jefferson County School District No. R-1.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.