Enrollment
601
Colorado · 2024-25 NCES data
Other / mixed grade configuration · Edgewater, CO
Jefferson Junior/Senior High School
Federal NCES profile for Jefferson Junior/Senior High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 47/100.
2024-25 NCES dataOther / mixed grade configurationNCES 080480000739
👥 S:T ratio 38
🌟 Gifted program 70
🎓 Counselors 80
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Jefferson Junior/Senior High School earns 47/100 on the Resource Investment Index, with class sizes near the Colorado median.
- #1 of 3
- schools in Edgewater · Resource Index
- 47
- Resource Index · Typical
- 15.4:1
- students per teacher
- 77.5%
- free-lunch eligible
Jefferson Junior/Senior High School has class sizes near the Colorado median. Computed live against every Colorado school reporting to NCES.
By Resource Investment Index, Jefferson Junior/Senior High School ranks #1 of 3 schools in Edgewater, CO.
School address
District: Jefferson County School District No. R-1 · Colorado
NCES ID 080480000739 Verify on NCES CCD record →
Teachers (FTE)
39.0
Federal CCD staff survey
Students per teacher
15.4:1
vs 16.6:1 Colorado avg
-7% vs state
Free-lunch eligible
77.5%
vs 38.5% Colorado avg
+101% vs state
Student-teacher ratio in context
How Jefferson Junior/Senior High School compares with Colorado and U.S. medians
What stands out at Jefferson Junior/Senior High School
Jefferson Junior/Senior High School is a high-poverty, mid-sized combined-grade school in Edgewater, Colorado, enrolling 601 students.
At 15.4:1, 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.
Economic need is high: 77.5% of students qualify for free meals, 101% above the Colorado average, a Title I-weighted population that federal funding formulas prioritise.
Enrollment of 601 puts it in the larger third of Colorado schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 1,922 scored Colorado schools.
Against 130 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #37.
Its student body is predominantly Hispanic or Latino (86% of enrollment) (diversity index 25/100).
Counselor coverage is strong, about 100 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 81.4% 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 Junior/Senior High School.
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 Junior/Senior High School compares
Jefferson Junior/Senior High School on the metrics families compare, against Colorado and U.S. means.
| Metric | This school | vs Colorado | Colorado avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 15.4:1 | ▼ 7% | 16.6:1 | 15.7:1 |
| Free-lunch eligible | 77.5% | ▲ 101% | 38.5% | 51.7% |
| Enrollment | 601 | top 19% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.4:1
Leaner classes than 43% of US schools, a middle-of-the-pack class size.
601
Bigger than 73% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
77.5%
free-lunch eligible
- 101% above the Colorado average of 38.5%
Well above the 40% Title I schoolwide threshold, among the highest-need profiles in the state; federal funds support the whole school, not individual students.
Staffing depth
15.4:1
students per teacher
- 7% below state mean
Top 46% in Colorado - lower ratio than 54% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
81.4%
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
Counselors6.0 FTE
Per 100 students, the combined health-and-guidance staffing load for this school.
Discipline context
32
in-school suspensions + 73 out-of-school
Suspension rate: 5.3 per 100 students. Combined in-school and out-of-school rate: 17.5 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
Hispanic or Latino 86.0%
White 6.7%
African American 2.8%
Two or More 2.7%
American Indian / Alaska Native 0.8%
Native Hawaiian / Pacific Islander 0.8%
Asian 0.2%
Largest group: Hispanic or Latino at 86.0% of enrollment.
Student-body diversity index 25.4/100
Simpson diversity index - at 25.4, Jefferson Junior/Senior High School is less mixed than the Colorado school average of 47.1.
Programs
AP courses offered 6
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Jefferson County School District No. R-1, which includes Jefferson Junior/Senior High School.
$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 Junior/Senior High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Arvada West High School | Larger | Lower economic need | Higher S:T ratio |
| Ralston Valley Senior High School | Larger | Lower economic need | Higher S:T ratio |
| Chatfield High School | Larger | Lower economic need | Higher S:T ratio |
| Lakewood High School | Larger | Lower economic need | Higher S:T ratio |
| Columbine High School | Larger | Lower economic need | Higher S:T ratio |
Comparisons are relative to Jefferson Junior/Senior High School'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 (~601 students)
Next steps
Verify locally before acting on Jefferson Junior/Senior High School's federal record.
- Compare Jefferson Junior/Senior High School 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 Junior/Senior High School
How many students attend Jefferson Junior/Senior High School?
Jefferson Junior/Senior High School has 601 students enrolled. It is a public school in Edgewater, CO.
What is the student-teacher ratio at Jefferson Junior/Senior High School?
The student-teacher ratio at Jefferson Junior/Senior High School is 15.4:1, which is 7% lower than the Colorado average of 16.6:1 and 2% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Jefferson Junior/Senior High School?
77.5% of students at Jefferson Junior/Senior High School are eligible for free lunch, compared to the Colorado average of 38.5%.
What is the racial and ethnic makeup of Jefferson Junior/Senior High School?
The largest demographic group at Jefferson Junior/Senior High School is Hispanic or Latino at 86.0% of enrollment, in Edgewater, CO.
What is the Resource Investment Index for Jefferson Junior/Senior High School?
Jefferson Junior/Senior High School has a Resource Investment Index of 47/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Jefferson Junior/Senior High School rank among schools in Edgewater?
By Resource Investment Index, Jefferson Junior/Senior High School ranks #1 of 3 schools in Edgewater, CO. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Edgewater on the city page.
Is Jefferson Junior/Senior High School a good school?
Jefferson Junior/Senior High School earns 47/100 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 Junior/Senior High School, 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.