Enrollment
203
Arizona · 2024-25 NCES data
2024-25 NCES data Other / mixed grade configuration NCES 040016501755 Charter school
Keystone Montessori Charter School — Phoenix, AZ
Federal NCES profile for Keystone Montessori Charter School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — Resource Investment Index 30/100.
🌟 Gifted program 30
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 →
The verdict
Keystone Montessori Charter School earns an F Resource Investment Index (30/100) on federal resource data.
- F
- Resource Index · 30/100
- 203
- students enrolled
School address
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.
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
Keystone Montessori Charter School reports 203 enrolled students to the National Center for Education Statistics (NCES).
On the finance side, the surrounding Keystone Montessori Charter School Inc. (10878) spends $19,032 per pupil district-wide, above the Arizona average of $13,145 and above the national average of $16,593. Revenue comes 37.8% from local sources (property taxes), 54.9% from the state, and 7.3% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a Resource Investment Index of 30/100 (F), calculated from 1 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 Keystone Montessori Charter School compares
Cross-validating school-level NCES values against Arizona state and U.S. national means lets readers see whether this school is an outlier or in line with peers.
| Metric | This school | vs Arizona | Arizona avg | U.S. avg |
|---|---|---|---|---|
| Enrollment | 203 | top 29% | — | — |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
School size vs. every US school
Total enrollment — where this school sits by size (neither large nor small is 'better')
203 larger than 20% of 95,891 US schools
Each bar is a band; taller bars hold more US schools. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Department of Education — NCES Common Core of Data · 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.
Funding equity
$19,032
per pupil, district-wide
— above Arizona avg of $13,145
Above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
8
in-school suspensions + 5 out-of-school
Suspension rate: 3.9 per 100 students. Combined in-school and out-of-school rate: 6.4 per 100 students. Reported via the Civil Rights Data Collection.
Overview
Enrollment 203 Top 29% in Arizona — larger than 71% of 2,186 state schools
Teachers (FTE) —
Students per teacher —
Free-lunch eligible —
NCES ID 040016501755
Student demographics
White 45.3%
Hispanic or Latino 32.0%
Two or More 12.3%
Asian 5.4%
African American 4.4%
American Indian / Alaska Native 0.5%
Largest group: White at 45.3% of enrollment.
Programs & staff
Counselors (FTE) 0.0
Discipline & special education
In-school suspensions 8
Out-of-school suspensions 5
Funding & spending
District-wide per-pupil expenditure for Keystone Montessori Charter School Inc. (10878), which includes Keystone Montessori Charter School.
$19,032
Per student
+45%
vs Arizona
Avg $13,145
+15%
vs U.S.
Avg $16,593
Revenue mix
Local 37.8%
State 54.9%
Federal 7.3%
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 other schools in Phoenix
6 comparable other schools (grades Mixed) serving the same city.
Pan-American Charter School
Standard public school
1,221 students
Great Hearts Academies - Anthem Prep
Standard public school
1,031 students
Westwind Elementary School
Standard public school
932 students 20.3:1 students per teacher
Stetson Hills School
Standard public school
887 students 17.9:1 students per teacher
Union Park School
Standard public school
873 students 16.4:1 students per teacher
Fireside Elementary School
Standard public school
693 students 15.9:1 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 Keystone Montessori Charter School
How many students attend Keystone Montessori Charter School?
Keystone Montessori Charter School has 203 students enrolled. It is a other school in Phoenix, AZ.
What is the racial and ethnic makeup of Keystone Montessori Charter School?
The largest demographic group at Keystone Montessori Charter School is White at 45.3%. The school serves a diverse student body in Phoenix, AZ.
What is the Resource Investment Index for Keystone Montessori Charter School?
Keystone Montessori Charter School has a Resource Investment Index of 30/100 (F) based on 1 factor: student-teacher ratio. This index measures federal resource allocation — staffing levels, program availability, and support services — not standardized test scores or academic outcomes. Limited indicators were available, so the index reflects partial data.
Is Keystone Montessori Charter School a good school?
Keystone Montessori Charter School earns an F Resource Investment Index (30/100) on federal resource data. The Resource Investment Index reflects staffing, counselor access, gifted programs, and attendance reported to NCES, not test scores or academic outcomes, so treat it as a resource snapshot rather than an overall rating. Limited indicators were available for this school, so the picture is partial.
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