Enrollment
177
Arizona · 2024-25 NCES data
Elementary school (grades K-5) · Phoenix, AZ
Montessori Day Public Schools Chartered - Mountainside
Federal NCES profile for Montessori Day Public Schools Chartered - Mountainside, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 30/100.
2024-25 NCES dataElementary school (grades K-5)NCES 040006801745Charter school
🌟 Gifted program 30
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Montessori Day Public Schools Chartered - Mountainside earns 30/100 on the Resource Investment Index on federal resource data.
- #33 of 116
- elementary schools in Phoenix · Resource Index
- 30
- Resource Index · Lower
- 177
- students enrolled
By Resource Investment Index, Montessori Day Public Schools Chartered - Mountainside ranks #33 of 116 elementary schools in Phoenix, AZ.
School address
NCES ID 040006801745 Verify on NCES CCD record →
What stands out at Montessori Day Public Schools Chartered - Mountainside
Montessori Day Public Schools Chartered - Mountainside is a mid-sized charter elementary school in Phoenix, Arizona, enrolling 177 students.
Enrollment of 177 puts it in the smaller third of Arizona schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 2,064 scored Arizona schools.
Its student body is led by White (53%) and Hispanic or Latino (38%) (diversity index 57/100).
The surrounding Montessori Day Public Schools Chartered Inc. (4359) spends $7,193 per pupil, 45% below the Arizona average, a leaner-resourced district than most.
Among Phoenix's elementary schools, it stands alongside Academy of Math and Science Avondale (1,175 students): Montessori Day Public Schools Chartered - Mountainside is smaller than that campus by headcount.
Montessori Day Public Schools Chartered Inc. (4359) is a single-school charter district, so Montessori Day Public Schools Chartered - Mountainside 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 Montessori Day Public Schools Chartered - Mountainside compares
Montessori Day Public Schools Chartered - Mountainside on the metrics families compare, against Arizona and U.S. means.
| Metric | This school | vs Arizona | Arizona avg | U.S. avg |
|---|---|---|---|---|
| Enrollment | 177 | top 74% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
177
Bigger than 17% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Funding equity
$7,193
per pupil, district-wide
- below Arizona avg of $13,145
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 53.1%
Hispanic or Latino 38.4%
Two or More 4.0%
Asian 2.3%
African American 1.7%
American Indian / Alaska Native 0.6%
Largest group: White at 53.1% of enrollment.
Student-body diversity index 56.8/100
Simpson diversity index - at 56.8, Montessori Day Public Schools Chartered - Mountainside is more mixed than the Arizona school average of 47.2.
Programs
Funding & spending
District-wide per-pupil expenditure for Montessori Day Public Schools Chartered Inc. (4359), which includes Montessori Day Public Schools Chartered - Mountainside.
$7,193
Per student
-45%
vs Arizona
Avg $13,145
-57%
vs U.S.
Avg $16,593
Revenue mix
Local 3.5%
State 89.0%
Federal 7.5%
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 in Phoenix
6 comparable elementary schools (grades K-5) serving the same city.
Academy of Math and Science Avondale
Standard public school
1,175 students
Kyrene Altadena Middle School
Standard public school
857 students 20.9:1 students per teacher
Catalina Ventura School
Standard public school
842 students 17.5:1 students per teacher
Inspiration Mountain School
Standard public school
789 students 25.5:1 students per teacher
Alhambra Traditional School
Standard public school
733 students 20.9:1 students per teacher
Legacy Traditional School - North Phoenix
Standard public school
567 students
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of Arizona, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Montessori Day Public Schools Chartered - Mountainside's federal record.
- Compare Montessori Day Public Schools Chartered - Mountainside against another school. Compare schools
- Montessori Day Public Schools Chartered Inc. (4359)'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 Montessori Day Public Schools Chartered - Mountainside
How many students attend Montessori Day Public Schools Chartered - Mountainside?
Montessori Day Public Schools Chartered - Mountainside has 177 students enrolled. It is an elementary school in Phoenix, AZ.
What is the racial and ethnic makeup of Montessori Day Public Schools Chartered - Mountainside?
The largest demographic group at Montessori Day Public Schools Chartered - Mountainside is White at 53.1% of enrollment, in Phoenix, AZ. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 56.8/100.
What is the Resource Investment Index for Montessori Day Public Schools Chartered - Mountainside?
Montessori Day Public Schools Chartered - Mountainside has a Resource Investment Index of 30/100 (lower reported resources relative to schools nationally) based on 1 factor: student-teacher ratio. Not a test-score or academic measure (national median ~41/100, see methodology). Limited indicators were available, so the index reflects partial data.
How does Montessori Day Public Schools Chartered - Mountainside rank among elementary schools in Phoenix?
By Resource Investment Index, Montessori Day Public Schools Chartered - Mountainside ranks #33 of 116 elementary schools in Phoenix, AZ. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Phoenix on the city page.
Is Montessori Day Public Schools Chartered - Mountainside a good school?
Montessori Day Public Schools Chartered - Mountainside earns 30/100 on the Resource Investment Index on federal resource data. 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 Montessori Day Public Schools Chartered Inc. (4359)?
None; Montessori Day Public Schools Chartered Inc. (4359) is a single-school charter district, and Montessori Day Public Schools Chartered - Mountainside is its only campus.
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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.