Top Rankings
Keystone Montessori Charter School Inc. (10878) School District ranks among the top 20% of public school district in Arizona for:
Category
Attribute
Overall Rank
Highest overall rank (Top 20%)
Math Proficiency
Highest math proficiency (Top 20%)
Reading/Language Arts Proficiency
Highest reading/language arts proficiency (Top 5%)
Science Proficiency
Highest science proficiency (Top 20%)
Diversity
Most diverse schools (Top 1%)
For the 2026-27 school year, there is 1 public school serving 203 students in Keystone Montessori Charter School Inc. (10878) School District. This district's average testing ranking is 9/10, which is in the top 20% of public schools in Arizona.
Public School in Keystone Montessori Charter School Inc. (10878) School District have an average math proficiency score of 47% (versus the Arizona public school average of 34%), and reading proficiency score of 82% (versus the 41% statewide average).
Minority enrollment is 55% of the student body (majority Hispanic), which is less than the Arizona public school average of 67% (majority Hispanic).
Overview
This School District
This State (AZ)
# Schools
1 School
2,470 Schools
# Students
203 Students
1,108,833 Students
# Teachers
13 Teachers
61,988 Teachers
Student-Teacher Ratio
16:1
16:1
Student By Grade
District Rank
Keystone Montessori Charter School Inc. (10878) School District, which is ranked within the top 20% of all 599 school districts in Arizona (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.
The school district's graduation rate of PS% has stayed relatively flat over five school years.
Overall District Rank
#62 out of 618 school districts
(Top 20%)
(Top 20%)
Math Test Scores (% Proficient)
47%
34%
Reading/Language Arts Test Scores (% Proficient)
80-84%
40%
Science Test Scores (% Proficient)
40-49%
24%
Chronically Absent Students
(2022-23)27.9%
41.2%
Students by Ethnicity:
Diversity Score
0.68
0.66
% American Indian
1%
5%
% Asian
5%
3%
% Hispanic
32%
49%
% Black
5%
6%
% White
45%
33%
% Hawaiian
n/a
n/a
% Two or more races
12%
4%
All Ethnic Groups
District Revenue and Spending
The revenue/student of $25,729 is higher than the state median of $14,457. The school district revenue/student has grown by 15% over four school years.
The school district's spending/student of $21,631 is higher than the state median of $13,869. The school district spending/student has grown by 8% over four school years.
Total Revenue
$5 MM
$16,030 MM
Spending
$4 MM
$15,378 MM
Revenue / Student
$25,729
$14,457
Spending / Student
$21,631
$13,869
Best Keystone Montessori Charter School Inc. (10878) School District Public Schools (2026-27)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Keystone Montessori Charter School
Charter School
(Math: 45-49% | Reading: 80-84%)
Rank:
Rank:
9/
Top 20%10
1025 E Liberty Ln
Phoenix, AZ 85048
(480) 460-7312
Phoenix, AZ 85048
(480) 460-7312
Gr: 1-9 | 203 students Student-teacher ratio: 16:1 Minority enrollment: 55%
Frequently Asked Questions
How many schools belong to Keystone Montessori Charter School Inc. (10878) School District?
Keystone Montessori Charter School Inc. (10878) School District manages 1 public schools serving 203 students.
What is the rank of Keystone Montessori Charter School Inc. (10878) School District?
Keystone Montessori Charter School Inc. (10878) School District is ranked #75 out of 599 school districts in Arizona (top 20%) based off of combined math and reading proficiency testing data for the 2022-2023 school year. This district ranks in the top 20% of Arizona school districts for: Highest overall rank (Top 20%), Highest math proficiency (Top 20%), Highest reading/language arts proficiency (Top 5%), Highest science proficiency (Top 20%) and Most diverse schools (Top 1%)
What is the racial composition of students in Keystone Montessori Charter School Inc. (10878) School District?
45% of Keystone Montessori Charter School Inc. (10878) School District students are White, 32% of students are Hispanic, 12% of students are Two or more races, 5% of students are Asian, 5% of students are Black, and 1% of students are American Indian.
What is the student/teacher ratio of Keystone Montessori Charter School Inc. (10878) School District?
Keystone Montessori Charter School Inc. (10878) School District has a student/teacher ratio of 16:1, which is lower than the Arizona state average of 17:1.
What is Keystone Montessori Charter School Inc. (10878) School District's spending/student ratio?
The school district's spending/student of $21,631 is higher than the state median of $13,869. The school district spending/student has grown by 8% over four school years.
Recent Articles
How Often Does Your Child's School Change Teachers Between Grade Levels?
Learn how teacher movement between grade levels affects continuity, experience, instruction, and school stability, plus the questions parents should ask about staffing patterns before choosing a public school today.
The School Pickup Test: What Arrival and Dismissal Reveal About a Public School
Discover what school arrival and dismissal reveal about safety, supervision, organization, communication, student behavior, transportation, and school climate before choosing the right public school for your child and family.
Should Siblings Attend the Same Public School?
Should siblings attend the same public school? Learn when academic needs, learning styles, programs, social fit, support services, and individual interests may make different schools better choices for children.
