Enrollment
314
Colorado · 2024-25 NCES data
Other / mixed grade configuration · Westminster, CO
Semper Elementary School
Federal NCES profile for Semper Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
2024-25 NCES dataOther / mixed grade configurationNCES 080480001548
👥 S:T ratio 37
🌟 Gifted program 70
📋 Attendance 18
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Semper Elementary School earns 42/100 on the Resource Investment Index, with class sizes near the Colorado median.
- #7 of 17
- schools in Westminster · Resource Index
- 42
- Resource Index · Typical
- 15.7:1
- students per teacher
- 39.5%
- free-lunch eligible
Semper Elementary School has class sizes near the Colorado median. Computed live against every Colorado school reporting to NCES.
By Resource Investment Index, Semper Elementary School ranks #7 of 17 schools in Westminster, CO.
School address
District: Jefferson County School District No. R-1 · Colorado
NCES ID 080480001548 Verify on NCES CCD record →
Teachers (FTE)
20.0
Federal CCD staff survey
Students per teacher
15.7:1
vs 16.6:1 Colorado avg
-5% vs state
Free-lunch eligible
39.5%
vs 38.5% Colorado avg
+3% vs state
Student-teacher ratio in context
How Semper Elementary School compares with Colorado and U.S. medians
What stands out at Semper Elementary School
Semper Elementary School is a mid-sized combined-grade school in Westminster, Colorado, enrolling 314 students.
At 15.7:1, 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.
Its free-meal eligibility rate of 39.5% lands close to the Colorado typical range, neither a high- nor low-need campus by this measure.
With 314 students, its enrollment sits close to the Colorado median campus size.
Its Resource Investment Index sits near the middle of the pack among 1,922 scored Colorado schools.
Against 297 statewide peers matched on enrollment and economic need, it ranks mid-pack at #161.
Its student body is led by White (49%) and Hispanic or Latino (35%) (diversity index 63/100).
Chronic absenteeism is elevated: 32.8% 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 Semper Elementary 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 Semper Elementary School compares
Semper Elementary 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 | 15.7:1 | ▼ 5% | 16.6:1 | 15.7:1 |
| Free-lunch eligible | 39.5% | ▲ 3% | 38.5% | 51.7% |
| Enrollment | 314 | top 59% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.7:1
Leaner classes than 41% of US schools, a middle-of-the-pack class size.
314
Bigger than 34% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
39.5%
free-lunch eligible
- 3% above the Colorado average of 38.5%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
15.7:1
students per teacher
- 5% below state mean
Top 50% in Colorado - lower ratio than 50% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
32.8%
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
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 1 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.3 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 49.4%
Hispanic or Latino 34.7%
Asian 7.6%
Two or More 5.1%
American Indian / Alaska Native 1.9%
African American 1.0%
Native Hawaiian / Pacific Islander 0.3%
Largest group: White at 49.4% of enrollment.
Student-body diversity index 62.7/100
Simpson diversity index - at 62.7, Semper Elementary School is more 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 Semper Elementary 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 Semper Elementary 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 | Similar economic need | Higher S:T ratio |
| Columbine High School | Larger | Lower economic need | Higher S:T ratio |
Comparisons are relative to Semper Elementary 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 (~314 students)
Next steps
Verify locally before acting on Semper Elementary School's federal record.
- Compare Semper Elementary 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 Semper Elementary School
How many students attend Semper Elementary School?
Semper Elementary School has 314 students enrolled. It is a public school in Westminster, CO.
What is the student-teacher ratio at Semper Elementary School?
The student-teacher ratio at Semper Elementary School is 15.7:1, which is 5% lower than the Colorado average of 16.6:1 and 0% higher 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 Semper Elementary School?
39.5% of students at Semper Elementary School are eligible for free lunch, compared to the Colorado average of 38.5%.
What is the racial and ethnic makeup of Semper Elementary School?
The largest demographic group at Semper Elementary School is White at 49.4% of enrollment, in Westminster, CO. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 62.7/100.
What is the Resource Investment Index for Semper Elementary School?
Semper Elementary School has a Resource Investment Index of 42/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Semper Elementary School rank among schools in Westminster?
By Resource Investment Index, Semper Elementary School ranks #7 of 17 schools in Westminster, CO. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Westminster on the city page.
Is Semper Elementary School a good school?
Semper Elementary School earns 42/100 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 Semper Elementary 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.
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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.