The brief
A charter school in Phoenix, AZ where students score 51 points above what's typical for similar communities.
It ranks 907 of 2,019 schools in Arizona and 1 of 1 in Keystone Montessori Charter School Inc. (10878).
Keystone Montessori Charter School is a charter school: it enrolls by application rather than by address, so check its enrollment process directly before choosing a neighborhood for it.
- 202552%
- 202458%
About this school's data1 correction under review · rating: low confidence · 7 sources, 2019–2025
Every number on this page comes from a published source with a stated period. Where a source is partial, aging, an estimate, or describes a surrounding area rather than the school, that limitation is named here.
Attendance data is under correction. This existing Resources & Environment score and overall rating may still reflect an unverified attendance input.
Full Profile · 4/4 metrics
Multi-year averages used by the rating model: math 70% (multi-year average, 2009-2025) · reading/ELA 77% (multi-year average, 2009-2025).
- School directory (enrollment, grades, staff, contact)
- NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
- Source period: SY 2023–24. A newer release may be available.
- MySchoolScout rating and rank
- MySchoolScout ranking model · Low confidence
- Vintage not available. Do not use this measure alone.
- Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
- Math proficiency
- State department of education · 2025 AASA · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Derived from source records rather than read directly from one field.
- Reading/ELA proficiency
- State department of education · 2025 AASA · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Derived from source records rather than read directly from one field.
- Student progress (growth)
- State assessments · Mixed source periods · Low confidence
- Vintage not available. Do not use this measure alone.
- Available for part of the eligible units; results may not represent the full area.
- Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
- Neighborhood (income, housing, education)
- U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
- Older source: ACS 2019–2023 5-year estimates. Use as historical context.
- Reported for the ZCTA for ZIP 85048; this does not measure the attendance area.
- Programs (AP/IB, athletics, gifted)
- CRDC via Urban Institute · SY 2021–22 · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: SY 2021–22. A newer release may be available.
Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2025; directory SY 2023–24
The neighborhood
Where it sits, and what the area looks like.Open the Phoenix school map to see school quality against home prices across the metro.
The area
- Median income
- $123,198
- Median home value
- $538,500
- Median rent
- $1,995/mo
- College educated
- 61.6%
- Homeownership
- 74.3%
- Poverty rate
- 4.1%
U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 85048; this is area context, not an attendance boundary.
Getting around
- Walk Score
- 18
- Car-Dependent
- Transit Score
- 20
- Minimal Transit
- Bike Score
- 27
- Somewhat Bikeable
- City reported crime
- 2,733/100K
- Reported Part-1 offenses (violent + property + arson) per 100,000 residents, from the FBI Uniform Crime Reporting program for Phoenix. This is a city-level reported-crime measure, not a school safety rating.
Walk, transit and bike scores by
FBI Uniform Crime Reporting · 2025 · city context (Phoenix), not school-level safety or attendance eligibility. Source details
Source period: 2025. Freshness not available.
Programs and who goes here
What the campus offers, and who it enrolls.Programs
- Advanced STEM courses
- 2 of 5
- Algebra II, Advanced Math, Calculus, Chemistry, Physics · CRDC via Urban Institute · SY 2021–22
The record
What is on file, and where each number came from.Questions families ask
What grades does Keystone Montessori Charter School serve?
Keystone Montessori Charter School serves students in grades 1st through 9th.
How many students attend Keystone Montessori Charter School?
Keystone Montessori Charter School has an enrollment of approximately 197 students.
How does Keystone Montessori Charter School rank in AZ?
Keystone Montessori Charter School ranks #907 of 2,019 schools in AZ.
What is Keystone Montessori Charter School's MySchoolScout rating?
Keystone Montessori Charter School has a current MySchoolScout rating of 6.6 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Keystone Montessori Charter School?
Based on loaded state assessment records, Keystone Montessori Charter School has 70% math proficiency (multi-year average, 2009-2025) and 77% reading/ELA proficiency (multi-year average, 2009-2025).
Is Keystone Montessori Charter School a charter school?
Yes, Keystone Montessori Charter School is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.
Is Keystone Montessori Charter School a Title I school?
No, Keystone Montessori Charter School is not currently a Title I school.
School facts
- Grades
- 1st – 9th
- Enrollment
- 197
- Type
- Regular
- Title I
- No
- Setting
- Large City
- County
- Maricopa County
- Phone
- (480) 460-7312
- Rank in district
- #1 of 1
- Schools in district
- 1
- District spending per student
- $22,933
- NCES F-33 · FY 2023 · This annual source is three years behind the current year.
- District child poverty rate
- Not available
- The source release did not match this district identifier.
- Area population (ZIP 85048)
- 34,113
- Area average commute
- 24.1 min
- Area median age
- 42.5
NCES Common Core of Data (CCD) (SY 2023–24).
Sources and official links
Keep exploring
Related reading
Data from NCES Common Core of Data, Arizona Dept. of Education, and U.S. Census ACS for the 2023–24 school year. Rankings computed by MySchoolScout. See all data sources.