Enrollment
211
Wisconsin · 2024-25 NCES data
Other / mixed grade configuration · Oconomowoc, WI
Adeline Montessori School Inc
Federal NCES profile for Adeline Montessori School Inc, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 44/100.
2024-25 NCES dataOther / mixed grade configurationNCES 550008903150Charter school
👥 S:T ratio 6
🌟 Gifted program 30
📋 Attendance 97
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Adeline Montessori School Inc earns 44/100 on the Resource Investment Index, with class sizes larger than 95% of Wisconsin schools. It is also more racially and ethnically mixed than most Wisconsin schools.
- #4 of 7
- schools in Oconomowoc · Resource Index
- 44
- Resource Index · Typical
- 23.4:1
- large classes for Wisconsin
- 211
- students enrolled
Adeline Montessori School Inc has class sizes larger than 95% of Wisconsin schools. Computed live against every Wisconsin school reporting to NCES.
By Resource Investment Index, Adeline Montessori School Inc ranks #4 of 7 schools in Oconomowoc, WI.
School address
District: Adeline Montessori School Inc. · Wisconsin
NCES ID 550008903150 Verify on NCES CCD record →
Teachers (FTE)
9.0
Federal CCD staff survey
Students per teacher
23.4:1
vs 14.4:1 Wisconsin avg
+62% vs state
Student-teacher ratio in context
How Adeline Montessori School Inc compares with Wisconsin and U.S. medians
What stands out at Adeline Montessori School Inc
Adeline Montessori School Inc is a mid-sized charter combined-grade school in Oconomowoc, Wisconsin, enrolling 211 students.
Class loads run heavy: 23.4:1 is larger than about 95% of Wisconsin schools and 62% above the 14.4:1 state mean, so each teacher carries more students than is typical.
Enrollment of 211 puts it in the smaller third of Wisconsin schools by headcount.
Its Resource Investment Index lands in the upper third of 2,202 scored Wisconsin schools.
Its student body is led by White (48%) and African American (32%), more mixed than most schools in the state (diversity index 65/100).
Attendance holds up well here: only 1.4% of students were chronically absent, below the typical post-pandemic national figure.
Among Oconomowoc's public schools, it stands alongside Lake Country Classical Academy Inc (562 students): Adeline Montessori School Inc is smaller than that campus by headcount.
Adeline Montessori School Inc. is a single-school charter district, so Adeline Montessori School Inc operates independently rather than alongside district-mates.
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 Adeline Montessori School Inc compares
Adeline Montessori School Inc on the metrics families compare, against Wisconsin and U.S. means.
| Metric | This school | vs Wisconsin | Wisconsin avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 23.4:1 | ▲ 62% | 14.4:1 | 15.7:1 |
| Enrollment | 211 | top 67% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
23.4:1
Leaner classes than 7% of US schools, heavier class loads than most.
211
Bigger than 21% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
23.4:1
students per teacher
- 62% above state mean
Top 95% in Wisconsin - lower ratio than 5% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
1.4%
chronically absent (missed 10%+ of school days)
Below 5%, comfortably under the pre-pandemic national baseline for chronic absenteeism.
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 47.8%
African American 32.1%
Two or More 10.0%
Hispanic or Latino 8.1%
Asian 1.9%
Largest group: White at 47.8% of enrollment.
Student-body diversity index 65.2/100
Simpson diversity index - at 65.2, Adeline Montessori School Inc is more mixed than the Wisconsin school average of 35.7.
Similar other schools in Oconomowoc
6 comparable other schools (grades Mixed) serving the same city.
Lake Country Classical Academy Inc
Standard public school
562 students
Meadow View Elementary
Standard public school
548 students 16.1:1 students per teacher
Summit Elementary
Standard public school
504 students 15.8:1 students per teacher
Park Lawn Elementary
Standard public school
383 students 12:1 students per teacher
Greenland Elementary
Standard public school
263 students 12.5:1 students per teacher
Stone Bank Elementary
Standard public school
241 students 11:1 students per teacher
Similar other schools statewide
Matched by enrollment size and by staffing ratio across all of Wisconsin, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~211 students)
Similar student-teacher ratio (~23.4:1)
Next steps
Verify locally before acting on Adeline Montessori School Inc's federal record.
- Compare Adeline Montessori School Inc against another school. Compare schools
- Adeline Montessori School Inc.'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 Adeline Montessori School Inc
How many students attend Adeline Montessori School Inc?
Adeline Montessori School Inc has 211 students enrolled. It is a public school in Oconomowoc, WI.
What is the student-teacher ratio at Adeline Montessori School Inc?
The student-teacher ratio at Adeline Montessori School Inc is 23.4:1, which is 62% higher than the Wisconsin average of 14.4:1 and 49% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Adeline Montessori School Inc?
The largest demographic group at Adeline Montessori School Inc is White at 47.8% of enrollment, in Oconomowoc, WI. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 65.2/100.
What is the Resource Investment Index for Adeline Montessori School Inc?
Adeline Montessori School Inc has a Resource Investment Index of 44/100 (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 Adeline Montessori School Inc rank among schools in Oconomowoc?
By Resource Investment Index, Adeline Montessori School Inc ranks #4 of 7 schools in Oconomowoc, WI. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Oconomowoc on the city page.
Is Adeline Montessori School Inc a good school?
Adeline Montessori School Inc earns 44/100 on the Resource Investment Index, with class sizes larger than 95% of Wisconsin schools. It is also more racially and ethnically mixed than most Wisconsin 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 Adeline Montessori School Inc.?
None; Adeline Montessori School Inc. is a single-school charter district, and Adeline Montessori School Inc is its only campus.
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.