Enrollment
512
Missouri · 2024-25 NCES data
Elementary school (grades K-5) · Lee's Summit, MO
Mason Elem.
Federal NCES profile for Mason Elem., including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 46/100.
2024-25 NCES dataElementary school (grades K-5)NCES 291830000979
👥 S:T ratio 29
🌟 Gifted program 70
🎓 Counselors 0
📋 Attendance 86
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mason Elem. earns 46/100 on the Resource Investment Index, with class sizes larger than 94% of Missouri schools.
- #15 of 17
- elementary schools in Lee's Summit · Resource Index
- 46
- Resource Index · Typical
- 17.7:1
- large classes for Missouri
- 6.8%
- free-lunch eligible
Mason Elem. has class sizes larger than 94% of Missouri schools. Computed live against every Missouri school reporting to NCES.
By Resource Investment Index, Mason Elem. ranks #15 of 17 elementary schools in Lee's Summit, MO.
School address
District: Lee's Summit R-Vii · Missouri
NCES ID 291830000979 Verify on NCES CCD record →
Teachers (FTE)
29.0
Federal CCD staff survey
Students per teacher
17.7:1
vs 12.8:1 Missouri avg
+38% vs state
Free-lunch eligible
6.8%
vs 46.1% Missouri avg
-85% vs state
Student-teacher ratio in context
How Mason Elem. compares with Missouri and U.S. medians
What stands out at Mason Elem.
Mason Elem. is a lower-poverty, mid-sized elementary school in Lee's Summit, Missouri, enrolling 512 students.
Class loads run heavy: 17.7:1 is larger than about 94% of Missouri schools and 38% above the 12.8:1 state mean, so each teacher carries more students than is typical.
Comparatively few students face economic hardship here, 6.8% free-meal eligibility runs 85% below the Missouri average.
Enrollment of 512 puts it in the larger third of Missouri schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 2,313 scored Missouri schools.
Among 200 similarly sized, similarly resourced-need Missouri schools statewide, it ranks #161, in the lower tier once campus size and economic need are matched.
Its student body is led by White (76%) and African American (9%) (diversity index 41/100).
Counselor access is stretched at roughly 512 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Attendance holds up well here: only 5.7% of students were chronically absent, below the typical post-pandemic national figure.
Lee's Summit R-Vii also operates Lee's Summit West High (1,999 students) and Lee's Summit Sr. High (1,989 students) alongside Mason 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 Mason Elem. compares
Mason 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 | 17.7:1 | ▲ 38% | 12.8:1 | 15.7:1 |
| Free-lunch eligible | 6.8% | ▼ 85% | 46.1% | 51.7% |
| Enrollment | 512 | top 21% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
17.7:1
Leaner classes than 26% of US schools, heavier class loads than most.
512
Bigger than 63% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
6.8%
free-lunch eligible
- 85% below the Missouri average of 46.1%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
17.7:1
students per teacher
- 38% above state mean
Top 94% in Missouri - lower ratio than 6% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
5.7%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$12,868
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 512 students, the combined health-and-guidance staffing load for this school.
Discipline context
6
in-school suspensions + 3 out-of-school
Suspension rate: 1.2 per 100 students. Combined in-school and out-of-school rate: 1.8 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 76.0%
African American 9.2%
Two or More 7.4%
Hispanic or Latino 5.9%
Asian 1.4%
American Indian / Alaska Native 0.2%
Largest group: White at 76.0% of enrollment.
Student-body diversity index 40.5/100
Simpson diversity index - at 40.5, Mason Elem. is more mixed than the Missouri school average of 31.0.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Lee's Summit R-Vii, which includes Mason Elem..
$12,868
Per student
0%
vs Missouri
Avg $12,931
-22%
vs U.S.
Avg $16,593
Revenue mix
Local 65.5%
State 26.8%
Federal 7.7%
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 Mason Elem. Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Lee's Summit West High | Larger | Similar economic need | Similar S:T ratio |
| Lee's Summit Sr. High | Larger | Similar economic need | Lower S:T ratio |
| Lee's Summit North High | Larger | Higher economic need | Similar S:T ratio |
| East Trails Middle School | Larger | Similar economic need | Lower S:T ratio |
| Bernard C. Campbell Middle | Larger | Higher economic need | Lower S:T ratio |
Comparisons are relative to Mason Elem.'s own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,999
- Students per teacher
- 16.7:1
- Resource Index
- 38/100
- Enrollment
- 1,989
- Students per teacher
- 14:1
- Resource Index
- 38/100
- Enrollment
- 1,940
- Students per teacher
- 16.4:1
- Resource Index
- 38/100
- Enrollment
- 1,051
- Students per teacher
- 15.7:1
- Resource Index
- 37/100
- Enrollment
- 1,043
- Students per teacher
- 14.7:1
- Resource Index
- 37/100
Similar elementary 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 (~512 students)
Similar student-teacher ratio (~17.7:1)
Next steps
Verify locally before acting on Mason Elem.'s federal record.
- Compare Mason Elem. against another school. Compare schools
- Lee's Summit R-Vii'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 Mason Elem.
How many students attend Mason Elem.?
Mason Elem. has 512 students enrolled. It is an elementary school in Lee's Summit, MO.
What is the student-teacher ratio at Mason Elem.?
The student-teacher ratio at Mason Elem. is 17.7:1, which is 38% higher than the Missouri average of 12.8:1 and 13% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Mason Elem.?
6.8% of students at Mason Elem. are eligible for free lunch, compared to the Missouri average of 46.1%.
What is the racial and ethnic makeup of Mason Elem.?
The largest demographic group at Mason Elem. is White at 76.0% of enrollment, in Lee's Summit, MO.
What is the Resource Investment Index for Mason Elem.?
Mason 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 Mason Elem. rank among elementary schools in Lee's Summit?
By Resource Investment Index, Mason Elem. ranks #15 of 17 elementary schools in Lee's Summit, MO. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Lee's Summit on the city page.
Is Mason Elem. a good school?
Mason Elem. earns 46/100 on the Resource Investment Index, with class sizes larger than 94% 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 Lee's Summit R-Vii?
Besides Mason Elem., Lee's Summit R-Vii also operates Lee's Summit West High (1,999 students), Lee's Summit Sr. High (1,989 students), and Lee's Summit North High (1,940 students). See the Lee's Summit R-Vii 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.