Enrollment
301
Missouri · 2024-25 NCES data
Other / mixed grade configuration · Plattsburg, MO
Ellis Elem.
Federal NCES profile for Ellis Elem., including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 46/100.
2024-25 NCES dataOther / mixed grade configurationNCES 292529001457
👥 S:T ratio 56
🌟 Gifted program 70
🎓 Counselors 40
📋 Attendance 19
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Ellis Elem. earns 46/100 on the Resource Investment Index, with class sizes smaller than 71% of Missouri schools.
- #2 of 3
- public schools in Plattsburg · Resource Index
- 46
- Resource Index · Typical
- 11.1:1
- small classes for Missouri
- 26.4%
- free-lunch eligible
Ellis Elem. has class sizes smaller than 71% of Missouri schools. Computed live against every Missouri school reporting to NCES.
By Resource Investment Index, Ellis Elem. ranks #2 of 3 public schools in Plattsburg, MO.
School address
District: Clinton Co. R-Iii · Missouri
NCES ID 292529001457 Verify on NCES CCD record →
Teachers (FTE)
27.0
Federal CCD staff survey
Students per teacher
11.1:1
vs 12.8:1 Missouri avg
-13% vs state
Free-lunch eligible
26.4%
vs 46.1% Missouri avg
-43% vs state
Student-teacher ratio in context
How Ellis Elem. compares with Missouri and U.S. medians
What stands out at Ellis Elem.
Ellis Elem. is a mid-sized combined-grade school in Plattsburg, Missouri, enrolling 301 students.
Class sizes run a bit leaner than typical: 11.1:1 puts it in the smaller third of Missouri schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 26.4% of students eligible for free meals.
With 301 students, its enrollment sits close to the Missouri median campus size.
Its Resource Investment Index sits near the middle of the pack among 2,313 scored Missouri schools.
Against 403 statewide peers matched on enrollment and economic need, it ranks mid-pack at #281.
Its student body is predominantly White (85% of enrollment) (diversity index 26/100).
Counselor coverage runs a bit thin, about 301 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Chronic absenteeism is elevated: 32.2% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Clinton Co. R-Iii also operates Plattsburg High (200 students) and Clinton Co. R-Iii Middle (197 students) alongside Ellis Elem..
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 Ellis Elem. compares
Ellis Elem. on the metrics families compare, against Missouri and U.S. means.
| Metric | This school | vs Missouri | Missouri avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 11.1:1 | ▼ 13% | 12.8:1 | 15.7:1 |
| Free-lunch eligible | 26.4% | ▼ 43% | 46.1% | 51.7% |
| Enrollment | 301 | top 52% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
11.1:1
Leaner classes than 82% of US schools, among the more generously staffed nationally.
301
Bigger than 32% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
26.4%
free-lunch eligible
- 43% below the Missouri average of 46.1%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
11.1:1
students per teacher
- 13% below state mean
Top 29% in Missouri - lower ratio than 71% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
32.2%
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
$12,776
per pupil, district-wide
- below Missouri avg of $12,931
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 301 students, the combined health-and-guidance staffing load for this school.
Discipline context
1
in-school suspensions + 4 out-of-school
Suspension rate: 0.3 per 100 students. Combined in-school and out-of-school rate: 1.7 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 85.4%
Two or More 10.0%
Hispanic or Latino 3.0%
African American 0.7%
Asian 0.7%
Native Hawaiian / Pacific Islander 0.3%
Largest group: White at 85.4% of enrollment.
Student-body diversity index 26.0/100
Simpson diversity index - at 26.0, Ellis Elem. is less mixed than the Missouri school average of 31.0.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Clinton Co. R-Iii, which includes Ellis Elem..
$12,776
Per student
-1%
vs Missouri
Avg $12,931
-23%
vs U.S.
Avg $16,593
Revenue mix
Local 60.4%
State 28.9%
Federal 10.7%
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 Ellis Elem. Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Plattsburg High | Smaller | Similar economic need | Similar S:T ratio |
| Clinton Co. R-Iii Middle | Smaller | Similar economic need | Higher S:T ratio |
Comparisons are relative to Ellis Elem.'s own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 200
- Students per teacher
- 10.5:1
- Resource Index
- 40/100
- Enrollment
- 197
- Students per teacher
- 17.9:1
- Resource Index
- 51/100
Similar other schools statewide
Matched by enrollment size and by staffing ratio across all of Missouri, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~301 students)
Similar student-teacher ratio (~11.1:1)
Next steps
Verify locally before acting on Ellis Elem.'s federal record.
- Compare Ellis Elem. against another school. Compare schools
- Clinton Co. R-Iii'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 Ellis Elem.
How many students attend Ellis Elem.?
Ellis Elem. has 301 students enrolled. It is a public school in Plattsburg, MO.
What is the student-teacher ratio at Ellis Elem.?
The student-teacher ratio at Ellis Elem. is 11.1:1, which is 13% lower than the Missouri average of 12.8:1 and 29% 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 Ellis Elem.?
26.4% of students at Ellis Elem. are eligible for free lunch, compared to the Missouri average of 46.1%.
What is the racial and ethnic makeup of Ellis Elem.?
The largest demographic group at Ellis Elem. is White at 85.4% of enrollment, in Plattsburg, MO.
What is the Resource Investment Index for Ellis Elem.?
Ellis Elem. has a Resource Investment Index of 46/100 (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 Ellis Elem. rank among public schools in Plattsburg?
By Resource Investment Index, Ellis Elem. ranks #2 of 3 public schools in Plattsburg, MO. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Plattsburg on the city page.
Is Ellis Elem. a good school?
Ellis Elem. earns 46/100 on the Resource Investment Index, with class sizes smaller than 71% of Missouri 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 Clinton Co. R-Iii?
Besides Ellis Elem., Clinton Co. R-Iii also operates Plattsburg High (200 students) and Clinton Co. R-Iii Middle (197 students). See the Clinton Co. R-Iii 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.