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Poston Butte High School

32375 N Gantzel Rd, San Tan Valley, AZ 85143

CSchola Grade
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Grades
7–12
High
Students
1,310
Enrolled 2024–25
Students per teacher
18.8 : 1
Full-time teachers
District
Florence Unified School District (4437)
Pinal County

Schola Grade C · Average

Letter grade (A–F) · compared with 287 Arizona high schools · How we grade
Test scores30% proficient in math & reading
33rdpercentile
Equity20% of low-income students proficient
19thpercentile
Attendance43% chronically absent
53rdpercentile
Graduation rate94% graduate in 4 years
69thpercentile
College readinessAt least 13% take AP, IB or dual-enrollment courses
36thpercentile
Class size18.8 students per teacher
54thpercentile

Percentiles compare this school with other Arizona high schools; the line marks the middle. Data: test scores 2021–22, graduation and absenteeism 2022–23 (U.S. Department of Education, EDFacts); coursework 2023–24 (Civil Rights Data Collection); staffing 2024–25 (NCES).

About Poston Butte High School

Poston Butte High School is a public high school in San Tan Valley, Arizona, serving grades 7–12. It is part of Florence Unified School District (4437). The school is located in a rural area near a town in Pinal County.

In the 2024–25 school year, 1,310 students were enrolled, with about 18.8 students for every full-time teacher. That ratio is larger than the typical Arizona high school (17.5 students per teacher). Its Schola Grade is C (average), compared with 287 Arizona high schools.

Grades & enrollment

Students per grade, 2024–25Grades 7–12

Location & nearby schools

32375 N Gantzel Rd
San Tan Valley, AZ 85143
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School details

Type
Public School · What this means
Level
High
Grades offered
7–12
Enrollment (2024–25)
1,310 students
Students per teacher
18.8 to 1
AP courses offered
9
Charter school
No
Magnet school
No
Locale
Rural — Fringe
School district
Florence Unified School District (4437)
County
Pinal County
NCES school ID
040292002972

Schools near Poston Butte High School

All 18 schools in San Tan Valley →

School data comes from the U.S. Department of Education: the National Center for Education Statistics (NCES) Common Core of Data and EDGE school locations (2024–25) and Private School Survey (2023–24), the Civil Rights Data Collection (2023–24), and EDFacts (test results 2021–22; graduation and chronic absenteeism 2022–23), plus other public sources. Please contact the school to confirm enrollment, programs, and other details. How we source data.