Serving 184 students in grades Kindergarten-6, Mountain School ranks in the top 5% of all schools in Arizona for overall test scores (math proficiency is top 10%, and reading proficiency is top 10%).
The percentage of students achieving proficiency in math is 60-64% (which is higher than the Arizona state average of 34%). The percentage of students achieving proficiency in reading/language arts is 75-79% (which is higher than the Arizona state average of 40%).
The student-teacher ratio of 10:1 is lower than the Arizona state level of 17:1.
Minority enrollment is 25% of the student body (majority Hispanic), which is lower than the Arizona state average of 67% (majority Hispanic).
Quick Facts (2026)
- School Type: Charter School
- Grades: Kindergarten-6
- Enrollment: 184 students
- Student-Teacher Ratio: 10:1
- Minority Enrollment: 25%
- Overall Testing Rank: Top 5% in AZ
- Math Proficiency: 60-64% (Top 10%)
- Reading Proficiency: 75-79% (Top 5%)
- Science Proficiency: 40-59% (Top 20%)
- Source: National Center for Education Statistics (NCES), AZ Dept. of Education
Top Rankings
Mountain School ranks among the top 20% of public schools in Arizona for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Science Proficiency
School Overview
Mountain School's student population of 184 students has stayed relatively flat over five school years.
The teacher population of 18 teachers has stayed relatively flat over five school years.
School Type
Grades Offered
Grades Kindergarten-6
(No virtual instruction)
(No virtual instruction)
Total Students
184 students
Total Classroom Teachers
18 teachers
Year Founded
1980
School Calendar
School Motto
Caring, cohesive environment that has the best interests of students and staff at heart
School Rankings
Mountain School ranks within the top 5% of all 1,921 schools in Arizona (based off of combined math and reading proficiency testing data).
The diversity score of Mountain School is 0.42, which is less than the diversity score at state average of 0.66. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#92 out of 1921 schools
(Top 5%)
(Top 5%)
Math Test Scores (% Proficient)
60-64%
34%
Reading/Language Arts Test Scores (% Proficient)
75-79%
40%
Science Test Scores (% Proficient)
40-59%
24%
Student-Teacher Ratio
10:1
17:1
American Indian
5%
5%
Asian
2%
3%
Hispanic
12%
49%
White
75%
33%
Two or more races
6%
4%
All Ethnic Groups
Eligible for Free Lunch
8%
41%
Eligible for Reduced Lunch
4%
10%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), AZ Dept. of Education
Frequently Asked Questions
What is Mountain School's ranking?
Mountain School is ranked #92 out of 1,921 schools, which ranks it among the top 5% of public schools in Arizona.
What schools are Mountain School often compared to?
Mountain Schoolis often viewed alongside schools like Haven Montessori Charter School, Basis Flagstaff, Montessori Charter School Of Flagstaff - Campus by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
60-64% of students have achieved math proficiency (compared to the 34% AZ state average), while 75-79% of students have achieved reading proficiency (compared to the 40% AZ state average).
How many students attend Mountain School?
184 students attend Mountain School.
What is the racial composition of the student body?
75% of Mountain School students are White, 12% of students are Hispanic, 6% of students are Two or more races, 5% of students are American Indian, and 2% of students are Asian.
What is the student-teacher ratio of Mountain School?
Mountain School has a student ration of 10:1, which is lower than the Arizona state average of 17:1.
What grades does Mountain School offer ?
Mountain School offers enrollment in grades Kindergarten-6 (No virtual instruction).
What school district is Mountain School part of?
Mountain School is part of Mountain School Inc. (4203) School District.
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