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Mountain School

Public, Charter Grades K-6
160th
SchoolDigger Rank ?
of 909 Arizona Elementary Schools
Better than 82% of Arizona elementary schools
Summary

Mountain School is a public charter elementary school serving 168 students in grades K-6 in Flagstaff, Arizona. It is part of the Mountain School Inc. district, which is ranked 59 out of 289 districts in the state and has a 4-star rating. Mountain School has consistently ranked in the top 100 elementary schools in Arizona over the past several years, with a current ranking of 160 out of 909 schools.

Mountain School consistently outperforms the state and district averages in standardized test scores across all grade levels and subjects. For example, in 2024-2025, 64% of 3rd graders at Mountain School were proficient or better in English Language Arts, compared to the state average of 36%. In math, 61% of 5th graders were proficient or better, compared to the state average of 37%. The school also performs exceptionally well for certain student subgroups, ranking 49th out of 1,219 Arizona elementary schools for female students and 33rd out of 820 schools for special education students in 2022-2023.

While Mountain School outperforms the state and district averages, some nearby schools like Flagstaff Junior Academy and Montessori Charter School of Flagstaff also demonstrate strong academic performance, with rankings in the top 500 elementary schools in Arizona. However, Mountain School's performance for certain student subgroups, such as Asian and Hispanic students, is not as strong as its overall performance, suggesting the need to focus on addressing achievement gaps. Additionally, the school's spending per student and student-teacher ratio are not reported, making it difficult to assess the school's resource allocation and operational model.

184
Students ?
10.2
Student/teacher ratio ?
5.6%
Free/discounted lunch ?
 311 W Cattle Drive Trl
       Flagstaff, AZ  86005-7060

(928) 779-2392

District: Mountain School Inc.

Racial breakdown:

White:
75.0%
Hispanic:
12.5%
Two or more races:
6.0%
more
 See top rated Arizona elementary schools

 Compare Mountain School to nearby elementary schools!
At a glance
Ranking trend: Declining — 89th percentile in 2015 → 82nd in 2025
Strengths
Test scores above the Arizona average (61% vs 39% meeting standards)
Ranks in the top 18% of Arizona elementary schools
Small classes — about 10 students per teacher
Worth a look
!Ranking has slipped — down 7 percentile points since 2015
!Some student groups rank well below the school's overall statewide standing
Students meeting standards (2024-2025) ?
This school61%
District avg61%
Arizona avg39%
160th of 909
Arizona public elementary schools ?
Top 18%▼ down 7 pts since 2015
From top 11% (2015) to top 18% (2025)
See the entire ranking list of Arizona Elementary Schools →
SchoolDigger rating ?
59th of 289Mountain School Inc. among Arizona districts
Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankArizona percentileRating
202579.5160 of 90982.4%★★★★☆
202487.995 of 91289.6%★★★★☆
202391.1100 of 124592.0%★★★★★
202286.391 of 100090.9%★★★★★
202180.7233 of 122681.0%★★★★☆
201971.2290 of 103972.1%★★★★☆
201880.2219 of 110980.3%★★★★☆
201772.7294 of 110673.4%★★★★☆
201673.7273 of 107974.7%★★★★☆
201586.8102 of 95589.3%★★★★☆
201476.8246 of 107977.2%★★★★☆
201379.7188 of 115883.8%★★★★☆
201280.9180 of 114184.2%★★★★☆
201180.1206 of 107580.8%★★★★☆
201085.0133 of 109087.8%★★★★☆
200986.0111 of 106289.5%★★★★☆

Asian

YearAvg scoreStatewide rankArizona percentileRating
202325.0281 of 31611.1%★☆☆☆☆

Female

YearAvg scoreStatewide rankArizona percentileRating
202393.549 of 121996.0%★★★★★
202288.746 of 82494.4%★★★★★
202182.1200 of 121983.6%★★★★☆
201875.2252 of 102375.4%★★★★☆

Hispanic

YearAvg scoreStatewide rankArizona percentileRating
202155.5433 of 119863.9%★★★☆☆

Male

YearAvg scoreStatewide rankArizona percentileRating
202561.7206 of 62667.1%★★★☆☆
202483.768 of 62889.2%★★★★☆
202382.4189 of 121684.5%★★★★☆
202288.745 of 83094.6%★★★★★
202174.9262 of 122078.5%★★★★☆
201985.888 of 85089.6%★★★★☆
201877.8232 of 103277.5%★★★★☆

Native American

YearAvg scoreStatewide rankArizona percentileRating
202145.4264 of 65459.6%★★★☆☆

Special Education

YearAvg scoreStatewide rankArizona percentileRating
202388.733 of 82096.0%★★★★★
202170.8148 of 120187.7%★★★★☆

White

YearAvg scoreStatewide rankArizona percentileRating
202563.2153 of 46567.1%★★★☆☆
202476.476 of 48684.4%★★★★☆
202386.179 of 102492.3%★★★★★
202279.581 of 80089.9%★★★★☆
202172.3269 of 116176.8%★★★★☆
201960.1223 of 59562.5%★★★☆☆
201858.9316 of 72056.1%★★★☆☆
How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)
Female (2023)96th percentile+4 vs school
Special Education (2023)96th percentile+4 vs school
White (2025)67th percentile-15 vs school
Male (2025)67th percentile-15 vs school
Hispanic (2021)64th percentile-17 vs school
Native American (2021)60th percentile-21 vs school
Asian (2023)11th percentile-81 vs school
By subject vs Arizona (2024-2025) ?
English Language Arts68%+28 vs state
Science61%+27 vs state
Mathematics55%+15 vs state

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Frequently Asked Questions about Mountain School

In the 2024-25 school year, 184 students attended Mountain School.

Mountain School ranks 160th of 909 Arizona elementary schools. SchoolDigger rates this school 4 stars out of 5.

Students at Mountain School are 75% White, 13% Hispanic, 6% Two or more races, 5% American Indian, 2% Asian.


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SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Arizona Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.





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