Enrollment
315
Colorado · 2024-25 NCES data
Other / mixed grade configuration · Lakewood, CO
Jefferson County Open Secondary
Federal NCES profile for Jefferson County Open Secondary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 37/100.
2024-25 NCES dataOther / mixed grade configurationNCES 080480000765
👥 S:T ratio 40
🌟 Gifted program 70
🎓 Counselors 37
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Jefferson County Open Secondary earns 37/100 on the Resource Investment Index, with class sizes near the Colorado median.
- #12 of 22
- schools in Lakewood · Resource Index
- 37
- Resource Index · Typical
- 15:1
- students per teacher
- 315
- students enrolled
Jefferson County Open Secondary has class sizes near the Colorado median. Computed live against every Colorado school reporting to NCES.
By Resource Investment Index, Jefferson County Open Secondary ranks #12 of 22 schools in Lakewood, CO.
School address
District: Jefferson County School District No. R-1 · Colorado
NCES ID 080480000765 Verify on NCES CCD record →
Teachers (FTE)
21.0
Federal CCD staff survey
Students per teacher
15:1
vs 16.6:1 Colorado avg
-10% vs state
Student-teacher ratio in context
How Jefferson County Open Secondary compares with Colorado and U.S. medians
What stands out at Jefferson County Open Secondary
Jefferson County Open Secondary is a mid-sized combined-grade school in Lakewood, Colorado, enrolling 315 students.
At 15:1, its student-teacher ratio sits close to the Colorado median, within a few percentage points of the 16.6:1 state norm, neither notably crowded nor notably small.
With 315 students, its enrollment sits close to the Colorado median campus size.
Its Resource Investment Index lands in the lower third of 1,922 scored Colorado schools.
Its student body is led by White (73%) and Hispanic or Latino (17%) (diversity index 43/100).
Counselor coverage runs a bit thin, about 315 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Chronic absenteeism is elevated: 40.6% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Jefferson County School District No. R-1 also operates Arvada West High School (1,923 students) and Ralston Valley Senior High School (1,875 students) alongside Jefferson County Open Secondary.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Jefferson County Open Secondary compares
Jefferson County Open Secondary on the metrics families compare, against Colorado and U.S. means.
| Metric | This school | vs Colorado | Colorado avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 15:1 | ▼ 10% | 16.6:1 | 15.7:1 |
| Enrollment | 315 | top 59% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15:1
Leaner classes than 47% of US schools, a middle-of-the-pack class size.
315
Bigger than 34% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
15:1
students per teacher
- 10% below state mean
Top 41% in Colorado - lower ratio than 59% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
40.6%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$13,124
per pupil, district-wide
- below Colorado avg of $16,273
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 315 students, the combined health-and-guidance staffing load for this school.
Discipline context
1
in-school suspensions + 22 out-of-school
Suspension rate: 0.3 per 100 students. Combined in-school and out-of-school rate: 7.3 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 73.3%
Hispanic or Latino 17.1%
Two or More 8.3%
Asian 0.6%
American Indian / Alaska Native 0.3%
Native Hawaiian / Pacific Islander 0.3%
Largest group: White at 73.3% of enrollment.
Student-body diversity index 42.7/100
Simpson diversity index - at 42.7, Jefferson County Open Secondary is less mixed than the Colorado school average of 47.1.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Jefferson County School District No. R-1, which includes Jefferson County Open Secondary.
$13,124
Per student
-19%
vs Colorado
Avg $16,273
-21%
vs U.S.
Avg $16,593
Revenue mix
Local 55.3%
State 36.9%
Federal 7.8%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Jefferson County Open Secondary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Arvada West High School | Larger | No free-lunch data | Higher S:T ratio |
| Ralston Valley Senior High School | Larger | No free-lunch data | Higher S:T ratio |
| Chatfield High School | Larger | No free-lunch data | Higher S:T ratio |
| Lakewood High School | Larger | No free-lunch data | Higher S:T ratio |
| Columbine High School | Larger | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Jefferson County Open Secondary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,923
- Students per teacher
- 21.4:1
- Resource Index
- 32/100
- Enrollment
- 1,875
- Students per teacher
- 21.6:1
- Resource Index
- 35/100
- Enrollment
- 1,808
- Students per teacher
- 20.1:1
- Resource Index
- 34/100
- Enrollment
- 1,735
- Students per teacher
- 17.4:1
- Resource Index
- 52/100
- Enrollment
- 1,710
- Students per teacher
- 19.9:1
- Resource Index
- 31/100
Similar other schools statewide
Matched by enrollment size and by staffing ratio across all of Colorado, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~315 students)
Next steps
Verify locally before acting on Jefferson County Open Secondary's federal record.
- Compare Jefferson County Open Secondary against another school. Compare schools
- Jefferson County School District No. R-1's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Jefferson County Open Secondary
How many students attend Jefferson County Open Secondary?
Jefferson County Open Secondary has 315 students enrolled. It is a public school in Lakewood, CO.
What is the student-teacher ratio at Jefferson County Open Secondary?
The student-teacher ratio at Jefferson County Open Secondary is 15:1, which is 10% lower than the Colorado average of 16.6:1 and 4% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of Jefferson County Open Secondary?
The largest demographic group at Jefferson County Open Secondary is White at 73.3% of enrollment, in Lakewood, CO.
What is the Resource Investment Index for Jefferson County Open Secondary?
Jefferson County Open Secondary has a Resource Investment Index of 37/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Jefferson County Open Secondary rank among schools in Lakewood?
By Resource Investment Index, Jefferson County Open Secondary ranks #12 of 22 schools in Lakewood, CO. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Lakewood on the city page.
Is Jefferson County Open Secondary a good school?
Jefferson County Open Secondary earns 37/100 on the Resource Investment Index, with class sizes near the Colorado median. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Jefferson County School District No. R-1?
Besides Jefferson County Open Secondary, Jefferson County School District No. R-1 also operates Arvada West High School (1,923 students), Ralston Valley Senior High School (1,875 students), and Chatfield High School (1,808 students). See the Jefferson County School District No. R-1 district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.