Enrollment
186
Colorado · 2024-25 NCES data
Other / mixed grade configuration · San Luis, CO
Centennial School
Federal NCES profile for Centennial School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 28/100.
2024-25 NCES dataOther / mixed grade configurationNCES 080636001416
👥 S:T ratio 54
🌟 Gifted program 30
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Centennial School earns 28/100 on the Resource Investment Index, even as it posts class sizes smaller than 85% of Colorado schools.
- 28
- Resource Index · Lower
- 11.6:1
- small classes for Colorado
- 84.5%
- free-lunch eligible
- 186
- students enrolled
Centennial School has class sizes smaller than 85% of Colorado schools. Computed live against every Colorado school reporting to NCES.
School address
District: Centennial School District No. R-1 · Colorado
NCES ID 080636001416 Verify on NCES CCD record →
Teachers (FTE)
16.0
Federal CCD staff survey
Students per teacher
11.6:1
vs 16.6:1 Colorado avg
-30% vs state
Free-lunch eligible
84.5%
vs 38.5% Colorado avg
+119% vs state
Student-teacher ratio in context
How Centennial School compares with Colorado and U.S. medians
What stands out at Centennial School
Centennial School is a high-poverty, mid-sized combined-grade school in San Luis, Colorado, enrolling 186 students.
Classes run notably small here: at 11.6:1, Centennial School is leaner than roughly 85% of Colorado schools and 30% under the state's 16.6:1 norm, more adult attention per pupil than most peers.
Economic need is high: 84.5% of students qualify for free meals, 119% above the Colorado average, a Title I-weighted population that federal funding formulas prioritise.
Enrollment of 186 puts it in the smaller third of Colorado schools by headcount.
Its Resource Investment Index trails 93% of the 1,922 Colorado schools with a score on record, one of the lower results on this measure.
Among 51 similarly sized, similarly resourced-need Colorado schools statewide, it ranks #46, in the lower tier once campus size and economic need are matched.
Its student body is predominantly Hispanic or Latino (82% of enrollment) (diversity index 30/100).
Chronic absenteeism is elevated: 80.6% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Its district draws 20.5% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Centennial School District No. R-1 operates only this one school, so Centennial School has no district-mates to compare against locally.
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 Centennial School compares
Centennial 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 | 11.6:1 | ▼ 30% | 16.6:1 | 15.7:1 |
| Free-lunch eligible | 84.5% | ▲ 119% | 38.5% | 51.7% |
| Enrollment | 186 | top 78% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
11.6:1
Leaner classes than 79% of US schools, among the more generously staffed nationally.
186
Bigger than 18% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
84.5%
free-lunch eligible
- 119% 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
11.6:1
students per teacher
- 30% below state mean
Top 15% in Colorado - lower ratio than 85% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
80.6%
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
$19,005
per pupil, district-wide
- above Colorado avg of $16,273
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
5
in-school suspensions + 32 out-of-school
Suspension rate: 2.7 per 100 students. Combined in-school and out-of-school rate: 19.9 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 81.7%
White 17.7%
African American 0.5%
Largest group: Hispanic or Latino at 81.7% of enrollment.
Student-body diversity index 30.1/100
Simpson diversity index - at 30.1, Centennial School is less mixed than the Colorado school average of 47.1.
Programs
AP courses offered 1
Funding & spending
District-wide per-pupil expenditure for Centennial School District No. R-1, which includes Centennial School.
$19,005
Per student
+17%
vs Colorado
Avg $16,273
+15%
vs U.S.
Avg $16,593
Revenue mix
Local 35.2%
State 44.3%
Federal 20.5%
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.
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 (~186 students)
Next steps
Verify locally before acting on Centennial School's federal record.
- Compare Centennial School against another school. Compare schools
- Centennial 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 Centennial School
How many students attend Centennial School?
Centennial School has 186 students enrolled. It is a public school in San Luis, CO.
What is the student-teacher ratio at Centennial School?
The student-teacher ratio at Centennial School is 11.6:1, which is 30% lower than the Colorado average of 16.6:1 and 26% 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 Centennial School?
84.5% of students at Centennial School are eligible for free lunch, compared to the Colorado average of 38.5%.
What is the racial and ethnic makeup of Centennial School?
The largest demographic group at Centennial School is Hispanic or Latino at 81.7% of enrollment, in San Luis, CO.
What is the Resource Investment Index for Centennial School?
Centennial School has a Resource Investment Index of 28/100 (lower reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, AP course offerings, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
Is Centennial School a good school?
Centennial School earns 28/100 on the Resource Investment Index, even as it posts class sizes smaller than 85% of Colorado schools. 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 Centennial School District No. R-1?
None reported; Centennial School District No. R-1 operates only Centennial School as a public school district in NCES's records.
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.