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C

Poston Butte High School

PublicHighGrades 7–12

32375 N Gantzel Rd, San Tan Valley, AZ 85143 · (480) 474-6100 · Part of Florence Unified School District

San Tan Valley’s School Grade B− better than 54% of Arizona school districts

Directions
Students
1,310
Students per teacher
19:1
Setting
Rural
Grades
7–12
The gist

What stands out about Poston Butte High School

  • Its own letter, C: better results than 31% of Arizona’s public schools
  • Math proficiency 16 pts below the state
  • Reading / language arts 17 pts below the state
  • Enrollment down 10.7% since 2020–21

On the path

Where San Tan Valley kids come from and go next. The whole path →

PK–811 schoolsDepends on your address
7–12Poston Butte High SchoolYou are here

Test scores

2020–21
Math proficiency15%
State average 31.2%
Reading / language arts22%
State average 38.5%

Its own letter, C, places these results among Arizona’s 1,781 public schools with results. Source: EDFacts via Urban Institute Education Data Portal (SY2020-21).

Location

Directions ↗

32375 N Gantzel Rd, San Tan Valley

Students

Enrollment by grade
Grade 9319
Grade 10361
Grade 11320
Grade 12310
Enrollment over time
1,467’20
1,434’21
1,393’22
1,423’23
1,310’24

Down 10.7% since 2020–21.

Who goes here
Hispanic 44%White 40%Black 8%Two or more races 4%American Indian/Alaska Native 2%Asian 1%Native Hawaiian/Pacific Islander <1%

As reported to NCES, share of students with a reported race or ethnicity.

Parents talk

Questions and answers about Poston Butte High School from San Tan Valley families.

Other schools in Florence Unified School District

The district →
Florence K-8
Elementary · Grades PK–8 · Florence
C+
805 students19:1
Anthem Elementary School
Other · Grades PK–9 · Florence
C+
722 students16:1
Walker Butte Middle School
Elementary · Grades PK–8 · San Tan Valley
C+
718 students16:1
San Tan Heights Elementary
Elementary · Grades PK–8 · San Tan Valley
C
669 students17:1
Skyline Ranch Elementary School
Elementary · Grades PK–8 · San Tan Valley
B−
583 students15:1
Copper Basin
Elementary · Grades PK–8 · San Tan Valley
C
557 students16:1

School facts: U.S. Department of Education (NCES), 2024–2025 school year. Test scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). A school’s letter is our own summary of its reading and math results against Arizona’s other public schools; San Tan Valley’s School Grade is built from its districts’ results. Map: © OpenStreetMap contributors.