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Excellent

#123 of 2,006 schools in AZ

Top 6% in state

Mountain School

Elementary School · Mountain School Inc. (4203) · Flagstaff, AZ

A charter elementary school in Flagstaff, AZ where students score 38 points above what's typical for similar communities.

Charter

311 W CATTLE DRIVE TRL, Flagstaff, AZ 86005

  • Math 62% proficient (2022)
  • Reading 77% proficient (2022)

Academics

Full Profile · 3/3 metrics
Student Progress8.8Excellent50%
Year-over-year improvement in student test scores.
View breakdown
Years of Data14
Annual Change-1.93 pts/yr
Data Period2009–2022
TrendDeclining
Academics9.7Excellent30%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency62% (2022 EdFacts)
Reading/ELA Proficiency77% (2022 EdFacts)
Overall Proficiency70% (2022 EdFacts, Math+ELA)
Expected (poverty-adj.)31% (model expectation from 2022 EdFacts)
vs. Expected+38.2 pts
Adjusted Percentile96th
Resources & Environment7.2Very Good20%
Student-teacher ratio, district spending per student, and attendance.
View breakdown
Chronic Absenteeism38.7%

Students at Mountain School score 70% proficient, which is above what's typical for similar communities (expected: 31%).

How we calculate scores →

2022 EdFacts proficiency

Most recent published year. School vs. AZ average.

Math Proficiency62%(2022 EdFacts)
School
State
Not reported(2022 EdFacts)
ELA Proficiency77%(2022 EdFacts)
School
State
Not reported(2022 EdFacts)

Trend

↑ Recovering

Proficiency declined earlier in the 14-year record (2009–2022), then recovered 5 points since 2019, reaching 70% in 2022.

Show all 14 years
2009
Math
77%
ELA
92%
2010
Math
72%
ELA
92%
2011
Math
77%
ELA
92%
2012
Math
77%
ELA
92%
2013
Math
77%
ELA
87%
2014
Math
42%
ELA
62%
2015
Math
52%
ELA
62%
2016
Math
52%
ELA
72%
2017
Math
62%
ELA
67%
2018
Math
57%
ELA
72%
2019
Math
57%
ELA
72%
2020*
Math
47%
ELA
67%
2021*
Math
47%
ELA
67%
2022
Math
62%
ELA
77%

Multi-year averages used by the rating model: math 61% (multi-year average, 2009-2022) · reading/ELA 77% (multi-year average, 2009-2022)

* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.

Based on 28 test records from AZ state assessments and EdFacts (NCES).

How we rate schools

A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.

See how we rate

The neighborhood

Where Mountain School sits, and what the surrounding area looks like.

Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries.

Getting around & local context

  • Walk 19Car-Dependent
  • Transit 41Some Transit
  • Bike 64Bikeable
  • City Safety: High2,706/100K

Powered byWalk Score

FBI Uniform Crime Reporting · 2024 · city context (Flagstaff), not school-level safety or attendance eligibility. Source details

Source period: 2024. Freshness not available.

Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)

Median income

$81,250

Median home value

$556,400

Median rent

$1,531/mo

College educated

58.6%

Homeownership

57.7%

Poverty rate

10.9%

ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 86005; this is area context, not an attendance boundary.

Compare nearby

Nearby same-level schools

4 from a 5-mile search

SchoolScoreGradesDistanceEnrollmentCompare
Manuel Demiguel Elementary SchoolEnrollment path unverified8.1PK–50.8 mi559Compare →
Lura Kinsey Elementary SchoolEnrollment path unverified4.7PK–51.7 mi343Compare →
Haven Montessori Charter SchoolCharter · enrollment unverified8.4K–62.4 mi81Compare →
Eva Marshall Elementary SchoolEnrollment path unverified6.9PK–63.2 mi384Compare →

Distance is proximity only; it is not attendance eligibility.

Enrollment path unverified: Potential public school; its attendance or application path has not been classified.

Charter · enrollment unverified: Potential charter option; enrollment requirements have not been verified.

Mountain School Inc. (4203)

Schools in district
1
Rank in district
#1 of 1
District spending per student
A valid denominator was not available for this calculation.
District child poverty rate
The source release did not match this district identifier.

Mountain School is listed in Mountain School Inc. (4203); a district label does not verify attendance for an address.

About Mountain School

Mountain School is a public elementary school in Flagstaff, AZ, part of Mountain School Inc. (4203), serving approximately 168 students in grades Kindergarten-6th. It holds a MySchoolScout rating of 8.8 out of 10 and ranks #123 of 2,006 schools in AZ. State assessment records show 61% math proficiency (multi-year average, 2009-2022) and 77% reading/ELA proficiency (multi-year average, 2009-2022).

Frequently asked questions

Common questions about Mountain School

What grades does Mountain School serve?

Mountain School serves students in grades Kindergarten through 6th.

How many students attend Mountain School?

Mountain School has an enrollment of approximately 168 students.

How does Mountain School rank in AZ?

Mountain School ranks #123 of 2,006 schools in AZ.

What is Mountain School's MySchoolScout rating?

Mountain School has a current MySchoolScout rating of 8.8 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 Mountain School?

Based on loaded state assessment records, Mountain School has 61% math proficiency (multi-year average, 2009-2022) and 77% reading/ELA proficiency (multi-year average, 2009-2022).

Is Mountain School a charter school?

Yes, Mountain School is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.

Is Mountain School a Title I school?

No, Mountain School is not currently a Title I school.

School factsNCES Common Core of Data (CCD) (SY 2023–24)

Grades
Kindergarten – 6th
Enrollment
168
Type
regular
Setting
Small City
County
Coconino County
Chronic Absenteeism (SY 2022-23)
38.7%
Area population (ZIP 86005)
17,165
Area average commute
22 min
Area median age
32.1
About this school's data

Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.

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 · 2022 EdFacts · Low confidence
  • Older source: 2022 EdFacts. Use as historical context.
  • 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 · 2022 EdFacts · Low confidence
  • Older source: 2022 EdFacts. Use as historical context.
  • 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)
NCES EdFacts · 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 86005; this does not measure the attendance area.

Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2022; directory SY 2023–24

About our data · How we calculate scores

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