Enrollment
423
Connecticut · 2024-25 NCES data
Elementary school (grades K-5) · Riverside, CT
North Mianus School
Federal NCES profile for North Mianus School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 64/100.
2024-25 NCES dataElementary school (grades K-5)NCES 090171000304
👥 S:T ratio 57
🌟 Gifted program 70
📋 Attendance 66
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
North Mianus School earns 64/100 on the Resource Investment Index, with class sizes near the Connecticut median.
- #3 of 3
- elementary schools in Riverside · Resource Index
- 64
- Resource Index · Higher
- 10.8:1
- students per teacher
- 2.0%
- free-lunch eligible
North Mianus School has class sizes near the Connecticut median. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, North Mianus School ranks #3 of 3 elementary schools in Riverside, CT.
School address
District: Greenwich School District · Connecticut
NCES ID 090171000304 Verify on NCES CCD record →
Teachers (FTE)
39.0
Federal CCD staff survey
Students per teacher
10.8:1
vs 12.1:1 Connecticut avg
-11% vs state
Free-lunch eligible
2.0%
vs 36.4% Connecticut avg
-95% vs state
Student-teacher ratio in context
How North Mianus School compares with Connecticut and U.S. medians
What stands out at North Mianus School
North Mianus School is a lower-poverty, mid-sized elementary school in Riverside, Connecticut, enrolling 423 students.
Class sizes run a bit leaner than typical: 10.8:1 puts it in the smaller third of Connecticut schools by student-teacher ratio.
Comparatively few students face economic hardship here, 2.0% free-meal eligibility runs 95% below the Connecticut average.
With 423 students, its enrollment sits close to the Connecticut median campus size.
Its Resource Investment Index lands in the upper third of 1,003 scored Connecticut schools.
Against 171 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #41.
Its student body is led by White (66%) and Asian (14%) (diversity index 53/100).
13.5% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The surrounding Greenwich School District spends $30,449 per pupil, 28% above the Connecticut average, a better-resourced district than most.
Among Riverside's elementary schools, it stands alongside Riverside School (440 students): North Mianus School is smaller than that campus by headcount and runs leaner classes (10.8:1 vs 12.6:1).
Greenwich School District also operates Greenwich High School (2,620 students) and Eastern Middle School (797 students) alongside North Mianus 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 North Mianus School compares
North Mianus School on the metrics families compare, against Connecticut and U.S. means.
| Metric | This school | vs Connecticut | Connecticut avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 10.8:1 | ▼ 11% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 2.0% | ▼ 95% | 36.4% | 51.7% |
| Enrollment | 423 | top 47% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10.8:1
Leaner classes than 84% of US schools, among the more generously staffed nationally.
423
Bigger than 51% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
2.0%
free-lunch eligible
- 95% below the Connecticut average of 36.4%
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
10.8:1
students per teacher
- 11% below state mean
Top 33% in Connecticut - lower ratio than 67% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
13.5%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$30,449
per pupil, district-wide
- above Connecticut avg of $23,870
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
3
in-school suspensions + 0 out-of-school
Suspension rate: 0.7 per 100 students. Combined in-school and out-of-school rate: 0.7 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 65.5%
Asian 14.2%
Hispanic or Latino 12.5%
Two or More 7.1%
African American 0.5%
American Indian / Alaska Native 0.2%
Largest group: White at 65.5% of enrollment.
Student-body diversity index 53.0/100
Simpson diversity index - at 53.0, North Mianus School is more mixed than the Connecticut school average of 50.5.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Greenwich School District, which includes North Mianus School.
$30,449
Per student
+28%
vs Connecticut
Avg $23,870
+84%
vs U.S.
Avg $16,593
Revenue mix
Local 81.4%
State 13.5%
Federal 5.1%
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 North Mianus School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Greenwich High School | Larger | Higher economic need | Higher S:T ratio |
| Eastern Middle School | Larger | Similar economic need | Similar S:T ratio |
| Western Middle School | Larger | Higher economic need | Lower S:T ratio |
| Central Middle School | Similar size | Higher economic need | Lower S:T ratio |
| Riverside School | Similar size | Similar economic need | Higher S:T ratio |
Comparisons are relative to North Mianus School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,620
- Students per teacher
- 12.5:1
- Resource Index
- 54/100
- Enrollment
- 797
- Students per teacher
- 10.4:1
- Resource Index
- 66/100
- Enrollment
- 563
- Students per teacher
- 8.3:1
- Resource Index
- 67/100
- Enrollment
- 483
- Students per teacher
- 8.8:1
- Resource Index
- 65/100
- Enrollment
- 440
- Students per teacher
- 12.6:1
- Resource Index
- 68/100
Similar elementary schools in Riverside
2 comparable elementary schools (grades K-5) serving the same city.
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of Connecticut, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~423 students)
Similar student-teacher ratio (~10.8:1)
Next steps
Verify locally before acting on North Mianus School's federal record.
- Compare North Mianus School against another school. Compare schools
- Greenwich School District'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 North Mianus School
How many students attend North Mianus School?
North Mianus School has 423 students enrolled. It is an elementary school in Riverside, CT.
What is the student-teacher ratio at North Mianus School?
The student-teacher ratio at North Mianus School is 10.8:1, which is 11% lower than the Connecticut average of 12.1:1 and 31% 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 North Mianus School?
2.0% of students at North Mianus School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of North Mianus School?
The largest demographic group at North Mianus School is White at 65.5% of enrollment, in Riverside, CT. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 53.0/100.
What is the Resource Investment Index for North Mianus School?
North Mianus School has a Resource Investment Index of 64/100 (higher 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 North Mianus School rank among elementary schools in Riverside?
By Resource Investment Index, North Mianus School ranks #3 of 3 elementary schools in Riverside, CT. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Riverside on the city page.
Is North Mianus School a good school?
North Mianus School earns 64/100 on the Resource Investment Index, with class sizes near the Connecticut 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 Greenwich School District?
Besides North Mianus School, Greenwich School District also operates Greenwich High School (2,620 students), Eastern Middle School (797 students), and Western Middle School (563 students). See the Greenwich School District 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.