Serving 138 students in grades 9-12, Cornerstone Charter School ranks in the bottom 50% of all schools in Arizona for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is ≤20% (which is lower than the Arizona state average of 34%). The percentage of students achieving proficiency in reading/language arts is ≤20% (which is lower than the Arizona state average of 40%).
The student-teacher ratio of 23:1 is higher than the Arizona state level of 17:1.
Minority enrollment is 88% of the student body (majority Hispanic), which is higher than the Arizona state average of 67% (majority Hispanic).
Quick Facts (2026)
- School Type: Alternative school / Charter School
- Grades: 9-12
- Enrollment: 138 students
- Student-Teacher Ratio: 23:1
- Minority Enrollment: 88%
- Graduation Rate: 20-24% (Btm 50% in AZ)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: ≤20% (Btm 50%)
- Reading Proficiency: ≤20% (Btm 50%)
- Science Proficiency: ≤20% (Btm 50%)
- Source: National Center for Education Statistics (NCES), AZ Dept. of Education
Top Rankings
Cornerstone Charter School ranks among the top 20% of public schools in Arizona for:
Category
Attribute
Percent Eligible For Free Lunch
School Overview
Cornerstone Charter School's student population of 138 students has declined by 32% over five school years.
The teacher population of 6 teachers has stayed relatively flat over five school years.
School Type
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
138 students
Total Classroom Teachers
6 teachers
School Calendar
School Rankings
Cornerstone Charter School ranks within the bottom 50% of all 1,921 schools in Arizona (based off of combined math and reading proficiency testing data).
The diversity score of Cornerstone Charter School is 0.53, 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
#1411 out of 1921 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
≤20%
34%
Reading/Language Arts Test Scores (% Proficient)
≤20%
40%
Science Test Scores (% Proficient)
≤20%
24%
Student-Teacher Ratio
23:1
17:1
American Indian
10%
5%
Asian
2%
3%
Hispanic
67%
49%
Black
6%
6%
White
12%
33%
Hawaiian
n/a
n/a
Two or more races
3%
4%
All Ethnic Groups
Graduation Rate
20-24%
77%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
100%
41%
Eligible for Reduced Lunch (22-23)
9%
7%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), AZ Dept. of Education
Frequently Asked Questions
What is Cornerstone Charter School's ranking?
Cornerstone Charter School is ranked #1411 out of 1,921 schools, which ranks it among the bottom 50% of public schools in Arizona.
What percent of students have achieved state testing proficiency in math and reading?
≤20% of students have achieved math proficiency (compared to the 34% AZ state average), while ≤20% of students have achieved reading proficiency (compared to the 40% AZ state average).
What is the graduation rate of Cornerstone Charter School?
The graduation rate of Cornerstone Charter School is 20-24%, which is lower than the Arizona state average of 77%.
How many students attend Cornerstone Charter School?
138 students attend Cornerstone Charter School.
What is the racial composition of the student body?
67% of Cornerstone Charter School students are Hispanic, 12% of students are White, 10% of students are American Indian, 6% of students are Black, 3% of students are Two or more races, and 2% of students are Asian.
What is the student-teacher ratio of Cornerstone Charter School?
Cornerstone Charter School has a student ration of 23:1, which is higher than the Arizona state average of 17:1.
What grades does Cornerstone Charter School offer ?
Cornerstone Charter School offers enrollment in grades 9-12 (No virtual instruction).
What school district is Cornerstone Charter School part of?
Cornerstone Charter School is part of Cornerstone Charter Schoolinc (79077) School District.
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