Cornerstone Charter School

Cornerstone Charter School, a micro-enrollment four-year high school in PHOENIX, Arizona, run under Cornerstone Charter SchoolInc (79077), educates 138 students, covering grades 9 through 12. Enrollment runs roughly 78% leaner than the state mean of about 631.

Cornerstone Charter SchoolInc (79077) is the operating authority for Cornerstone Charter School, handling staffing, calendars, and reporting to the state department of education.

On demographics, Cornerstone Charter School shows that Hispanic students make up the majority at 67%; the rest is composed of 12% White, 10% Native American, 7% Black, 3% multiracial. That is noticeably more Hispanic than the county at large, where the share is closer to 31%.

On the resource side, The school currently runs with 6 full-time-equivalent teachers, for a student-teacher ratio near 23.0:1. Statewide, the average ratio sits near 20.2:1, putting Cornerstone Charter School higher than the state norm the norm.

In the broader community, Maricopa County reports that the typical household earns roughly $89,300 per year, 37% of adults hold a bachelor's degree or higher, and the poverty rate sits near 8%. Across Maricopa County's 1352 public schools (combined enrollment of about 725,139 students), Cornerstone Charter School is one campus in the mix.

Washington High School is the nearest neighboring public school, about 0.4 miles from this campus. Counting just inside five miles, 8 other public schools cluster around Cornerstone Charter School.

The school occupies a city-core site. As a public charter, Cornerstone Charter School runs on public funding but with greater curricular and operational autonomy than a typical district school.

Trend over the last 7 years. Looking back 7 years, enrollment at Cornerstone Charter School has declined 26%, going from 186 students in 2018 to 138 in 2025. The Black share of enrollment decreased from 18% to 7% over that span.

In the discussion threads here, the page collects discussion, questions, and updates around classroom updates, athletics, and weather closures. The community welcomes input from current and former families.