Enrollment
119
Minnesota · 2024-25 NCES data
Elementary school (grades K-5) · Elk River, MN
Three Rivers Montessori School
Federal NCES profile for Three Rivers Montessori School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 23/100.
2024-25 NCES dataElementary school (grades K-5)NCES 270044905163Charter school
👥 S:T ratio 40
🌟 Gifted program 30
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Three Rivers Montessori School earns 23/100 on the Resource Investment Index, with class sizes near the Minnesota median.
- #4 of 6
- elementary schools in Elk River · Resource Index
- 23
- Resource Index · Lower
- 14.9:1
- students per teacher
- 21.0%
- free-lunch eligible
Three Rivers Montessori School has class sizes near the Minnesota median. Computed live against every Minnesota school reporting to NCES.
By Resource Investment Index, Three Rivers Montessori School ranks #4 of 6 elementary schools in Elk River, MN.
School address
District: Three Rivers Montessori School · Minnesota
NCES ID 270044905163 Verify on NCES CCD record →
Teachers (FTE)
8.0
Federal CCD staff survey
Students per teacher
14.9:1
vs 15.8:1 Minnesota avg
-6% vs state
Free-lunch eligible
21.0%
vs 42.8% Minnesota avg
-51% vs state
Student-teacher ratio in context
How Three Rivers Montessori School compares with Minnesota and U.S. medians
What stands out at Three Rivers Montessori School
Three Rivers Montessori School is a mid-sized charter elementary school in Elk River, Minnesota, enrolling 119 students.
At 14.9:1, its student-teacher ratio sits close to the Minnesota median, within a few percentage points of the 15.8:1 state norm, neither notably crowded nor notably small.
Economic need runs somewhat below the state's typical profile, with 21.0% of students eligible for free meals.
Enrollment of 119 puts it in the smaller third of Minnesota schools by headcount.
Its Resource Investment Index trails 91% of the 2,334 Minnesota schools with a score on record, one of the lower results on this measure.
Among 126 similarly sized, similarly resourced-need Minnesota schools statewide, it ranks #115, in the lower tier once campus size and economic need are matched.
Its student body is predominantly White (89% of enrollment) (diversity index 20/100).
Chronic absenteeism is elevated: 47.9% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Three Rivers Montessori School spends $11,558 per pupil, 24% below the Minnesota average, a leaner-resourced district than most.
Its district draws 19.5% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Three Rivers Montessori School is a single-school charter district, so Three Rivers Montessori School 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 Three Rivers Montessori School compares
Three Rivers Montessori School on the metrics families compare, against Minnesota and U.S. means.
| Metric | This school | vs Minnesota | Minnesota avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 14.9:1 | ▼ 6% | 15.8:1 | 15.7:1 |
| Free-lunch eligible | 21.0% | ▼ 51% | 42.8% | 51.7% |
| Enrollment | 119 | top 67% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.9:1
Leaner classes than 48% of US schools, a middle-of-the-pack class size.
119
Bigger than 12% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
21.0%
free-lunch eligible
- 51% below the Minnesota average of 42.8%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
14.9:1
students per teacher
- 6% below state mean
Top 53% in Minnesota - lower ratio than 47% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
47.9%
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
$11,558
per pupil, district-wide
- below Minnesota avg of $15,270
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
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
- 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 89.1%
Two or More 5.9%
African American 3.4%
Hispanic or Latino 1.7%
Largest group: White at 89.1% of enrollment.
Student-body diversity index 20.1/100
Simpson diversity index - at 20.1, Three Rivers Montessori School is less mixed than the Minnesota school average of 42.8.
Programs
Funding & spending
District-wide per-pupil expenditure for Three Rivers Montessori School, which includes Three Rivers Montessori School.
$11,558
Per student
-24%
vs Minnesota
Avg $15,270
-30%
vs U.S.
Avg $16,593
Revenue mix
Local 3.1%
State 77.4%
Federal 19.5%
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.
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of Minnesota, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~119 students)
Next steps
Verify locally before acting on Three Rivers Montessori School's federal record.
- Compare Three Rivers Montessori School against another school. Compare schools
- Three Rivers Montessori School'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 Three Rivers Montessori School
How many students attend Three Rivers Montessori School?
Three Rivers Montessori School has 119 students enrolled. It is an elementary school in Elk River, MN.
What is the student-teacher ratio at Three Rivers Montessori School?
The student-teacher ratio at Three Rivers Montessori School is 14.9:1, which is 6% lower than the Minnesota average of 15.8:1 and 5% 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 Three Rivers Montessori School?
21.0% of students at Three Rivers Montessori School are eligible for free lunch, compared to the Minnesota average of 42.8%.
What is the racial and ethnic makeup of Three Rivers Montessori School?
The largest demographic group at Three Rivers Montessori School is White at 89.1% of enrollment, in Elk River, MN.
What is the Resource Investment Index for Three Rivers Montessori School?
Three Rivers Montessori School has a Resource Investment Index of 23/100 (lower 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 Three Rivers Montessori School rank among elementary schools in Elk River?
By Resource Investment Index, Three Rivers Montessori School ranks #4 of 6 elementary schools in Elk River, MN. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Elk River on the city page.
Is Three Rivers Montessori School a good school?
Three Rivers Montessori School earns 23/100 on the Resource Investment Index, with class sizes near the Minnesota 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 Three Rivers Montessori School?
None; Three Rivers Montessori School is a single-school charter district, and Three Rivers Montessori School 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.