Enrollment
210
Wisconsin · 2024-25 NCES data
2024-25 NCES data Other / mixed grade configuration NCES 550008203085 Charter school
Isthmus Montessori Academy Public — Madison, WI
Federal NCES profile for Isthmus Montessori Academy Public, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — Resource Investment Index 31/100.
👥 Class size 0
🌟 Gifted program 30
🎓 Counselors 58
📋 Attendance 35
How this works: Each indicator above is scored 0–100 from federal NCES and CRDC data, then averaged into the Resource Investment Index. This measures resource allocation — staffing, programs, and support services — not standardized test scores or academic outcomes. Full methodology →
School address
District: Isthmus Montessori Academy Inc. · Wisconsin
Public location data per NCES (National Center for Education Statistics) Common Core of Data. Verify the school's current address on the NCES CCD record.
Teachers (FTE)
7.0
Federal CCD staff survey
Students per teacher
29.7:1
vs 15.1:1 Wisconsin avg
+97% vs state
Free-lunch eligible
6.3%
vs 38.5% Wisconsin avg
-84% vs state
Student-teacher ratio in context
How Isthmus Montessori Academy Public compares with Wisconsin and U.S. medians
The federal record — no proprietary index, no editorial formula.
PlainSchools publishes the actual federal measurements — enrollment, staffing, demographics, discipline, and finance — straight from the NCES Common Core of Data, CRDC, and F-33 surveys. No composite rating, no opinion-based score on top. You get the same raw numbers researchers and policymakers use, with benchmarks, spending context, and equity indicators computed from the same federal datasets. Full methodology linked below.
What this school's NCES data tells you
Isthmus Montessori Academy Public reports 210 enrolled students to the National Center for Education Statistics (NCES) alongside 7.0 full-time-equivalent teachers, producing a 29.7:1 student-teacher ratio. That figure sits 97% above the Wisconsin state mean of 15.1:1, signalling larger average class loads than peers in the same state. Against the national 2024-25 average of 15.9:1, it is 87% higher, a useful calibration for families comparing districts across state lines.
Title I and federal lunch eligibility offer another window into the student body: 6.3% of pupils qualify for free meals, a proxy for household income that federal programs use to direct funding. The free-lunch share is 84% below the Wisconsin average and 88% below the national baseline. Counselor coverage works out to roughly 210 students per counselor, meeting the American School Counselor Association recommendation of 250:1. Chronic absenteeism — missing 10% or more of school days — stands at 26.2% according to the 2021-22 Civil Rights Data Collection.
Taken together, these measurements produce a Resource Investment Index of 31/100 (F), calculated from 4 distinct NCES and CRDC indicators measuring resource allocation rather than academic outcomes.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Isthmus Montessori Academy Public compares
Cross-validating school-level NCES values against Wisconsin state and U.S. national means lets readers see whether this school is an outlier or in line with peers.
| Metric | This school | vs Wisconsin | Wisconsin avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 29.7:1 | ▲ 97% | 15.1:1 | 15.9:1 |
| Free-lunch eligible | 6.3% | ▼ 84% | 38.5% | 51.8% |
| Enrollment | 210 | top 32% | — | — |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
What the federal data reveals about equity at this school
Federal measurements — not ratings — surface the resource and opportunity picture. Below are the indicators that researchers, civil-rights monitors, and funding formulas use to assess equity.
Economic need
6.3%
free-lunch eligible
— 84% below the Wisconsin average of 38.5%
Below the 40% Title I threshold — federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
29.7:1
students per teacher
— 97% above state mean
Top 97% in Wisconsin — lower ratio than 3% of state schools
Above 20:1 — larger class loads than the typical U.S. public school; staffing is stretched relative to enrollment.
Engagement
26.2%
chronically absent (missed 10%+ of school days)
Chronic absenteeism at or above 20% — the CDC threshold for "high" — signals significant barriers to regular attendance.
Support staff
Counselors1.0 FTE
Per 210 students — the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
Overview
Enrollment 210 Top 32% in Wisconsin — larger than 68% of 2,205 state schools
Teachers (FTE) 7.0
Students per teacher 29.7:1 +97% vs state
Free-lunch eligible 6.3% -84% vs state
NCES ID 550008203085
Student demographics
White 67.6%
Hispanic or Latino 14.3%
Two or More 11.4%
Asian 3.8%
African American 2.9%
Largest group: White at 67.6% of enrollment.
Programs & staff
Counselors (FTE) 1.0
Students per counselor 210:1
Discipline & special education
Chronically absent 26.2%
In-school suspensions 0
Out-of-school suspensions 0
Similar other schools in Madison
6 comparable other schools (grades Mixed) serving the same city.
Cesar Chavez Elementary
Standard public school
631 students 12.9:1 students per teacher
Leopold Elementary
Standard public school
626 students 10.6:1 students per teacher
4k Pk Off Site
Standard public school
619 students 13.1:1 students per teacher
Kennedy Elementary
Standard public school
582 students 14.6:1 students per teacher
Dr Virginia Henderson Elementary School
Standard public school
462 students 10.9:1 students per teacher
Milele Chikasa Anana Elementary School
Standard public school
455 students 12.3:1 students per teacher
Educator & family resources
In-depth guides on understanding NCES data, school choice, and education funding.
Understanding NCES data
How CCD, CRDC and EDFacts feed every public-school number you see.
Choose a school district
Eight signals that matter more than the overall ranking number.
How schools are funded
Title I, F-33, state aid formulas and what per-pupil spending really means.
Chronic absenteeism
Why missing 10% of school matters and how it varies by district.
Magnet vs charter vs traditional
Three school types, three funding models, three sets of trade-offs.
School discipline data
What CRDC suspension and expulsion records do and don't reveal.
Frequently asked questions about Isthmus Montessori Academy Public
How many students attend Isthmus Montessori Academy Public?
Isthmus Montessori Academy Public has 210 students enrolled. It is a other school in Madison, WI.
What is the student-teacher ratio at Isthmus Montessori Academy Public?
The student-teacher ratio at Isthmus Montessori Academy Public is 29.7:1, which is 97% higher than the Wisconsin average of 15.1:1 and 87% higher than the national average of 15.9:1.
What percentage of students receive free lunch at Isthmus Montessori Academy Public?
6.3% of students at Isthmus Montessori Academy Public are eligible for free lunch, compared to the Wisconsin average of 38.5%.
What is the racial and ethnic makeup of Isthmus Montessori Academy Public?
The largest demographic group at Isthmus Montessori Academy Public is White at 67.6%. The school serves a diverse student body in Madison, WI.
What is the Resource Investment Index for Isthmus Montessori Academy Public?
Isthmus Montessori Academy Public has a Resource Investment Index of 31/100 (F) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. This index measures federal resource allocation — staffing levels, program availability, and support services — not standardized test scores or academic outcomes.