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SCHOOL COMMUNITY·FLORENCE UNIFIED SCHOOL DISTRICT (4437)·NCES 040292002972

Poston Butte High School

32375 N GANTZEL RD, San Tan Valley, AZ 85143 · (480) 474-6100 · Pinal County
GRADES 07–12HIGH41-RURALREGULAR SCHOOL1,310 STUDENTS
C+
allk12 Grade
Scored higher than 43% of Arizona public high schools
  • C+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • ·Beats expectations Not available for this school, so the grade uses the other parts.
  • B-Three-year trend Change in reading and math proficiency over the last three test years.

Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Arizona public high schools

Enrollment
1,310
High
DISTRICT 987 · STATE 631
Student : Teacher
18.9:1
70 FTE teachers
DISTRICT 19.2:1 · STATE 20.2:1
Free / Reduced Lunch
,
Title I proxy
STATE 95%
Community
6
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 931924%
Grade 1036128%
Grade 1132024%
Grade 1231024%
Student demographics
63%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 64% · STATE 65% · US 70%
White
52940%
DISTRICT 40% · STATE 33% · US 43%
Hispanic
57744%
DISTRICT 43% · STATE 48% · US 30%
Black
1078%
DISTRICT 7% · STATE 6% · US 15%
Asian
161%
DISTRICT 1% · STATE 3% · US 6%
Two+
464%
DISTRICT 5% · STATE 4% · US 5%
Native American
242%
DISTRICT 2% · STATE 5% · US 1%
Pacific Islander
111%
DISTRICT 1% · STATE 0% · US 0%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
67852%
Female
63248%

Discussions

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Test scores

AASA 2024-25 . % Passing
English Language Arts
31.0%
AZ avg 45.4% . +3.0pp since 2017
Math
22.0%
AZ avg 37.8% . +5.0pp since 2017

What this means: On the AASA, Arizona's statewide test, about 31 of every 100 students at this school read and write at grade level and about 22 of 100 do math at grade level. Across all Arizona schools, those numbers are about 45 and 38. Reading and writing scores are up about 3 points since 2017, while math scores are up about 5 points.

AASA results by year

School yearEnglish Language ArtsMath
2024-2531.0%22.0%
2023-2425.0%19.0%
2022-2332.0%19.0%
2021-2229.0%20.0%
2020-2122.0%2.0%
2018-1923.0%17.0%
2017-1828.0%17.0%
% Passing, all students and all tested grades.
Source: AASA. All students, all grades. See all years and grades →

Where Poston Butte High School ranks

Among high schools
MeasureThis schoolIn ArizonaIn Pinal County
Math proficiency
ranked highest first
22.0%#158 of 268
▲ 15
#5 of 20
▲ 3
Reading proficiency
ranked highest first
31.0%#172 of 267
▲ 21
#9 of 20
▲ 1
3-year test score change
ranked biggest gain first
+2.0pp#115 of 220#6 of 15
Enrollment
ranked largest first
1,310#115 of 510#4 of 34
Students per teacher
ranked fewest first
18.9:1#114 of 279#7 of 19
Diversity index
ranked most diverse first
63.4%#61 of 284#9 of 20
Enrollment change since 2017-18
ranked steepest decline first
-4.0%#104 of 132#6 of 7
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
1,310
-157 (-11%) vs 2020
0% since 2010-11, when it was 1,310
Student : Teacher
18.9:1
was 20.1:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-251,31069.518.9:1N/A
2023-241,42369.820.4:1N/A
2022-231,39371.819.4:145% (626)
2020-211,4677320.1:1N/A
2017-181,36581.716.7:150% (682)
2015-161,9188422.8:112% (224)
2010-111,3105822.6:147% (614)
Source: NCES Common Core of Data. Rows are the federal collections on file for Poston Butte High School.

Since 2017-18: students down 4% (1,365 to 1,310); teachers down 15% (81.7 to 69.5).

About Poston Butte High School

Poston Butte High School is a high-enrollment high school found in San Tan Valley, Arizona. A federal count lists 1,310 students at the school, in grades 7 through 12. Average enrollment for high schools in Arizona is about 631, so this school runs 108% larger than that.

Besides Poston Butte High School, Florence Unified School District (4437) runs 13 other schools. The district enrolls 8,731 students.

Hispanic students are the largest group at Poston Butte High School, with 44% of enrollment. Beyond that, enrollment is 40% White, 8% Black, and 4% multiracial. The Hispanic share of the county population is lower, at 30%. Poston Butte High School has a diversity index of 63%, compared with 70% for all US public school students.

The school's student-to-teacher ratio is about 18.9:1, with 69.5 full-time-equivalent teachers. The average ratio among high schools in Arizona is 20.2:1, higher than at this school.

allk12 grades Poston Butte High School a C+. The grade compares the school only with Arizona public high schools, because each state gives its own test.

Pinal County has about 469,006 residents, and median household income is about $80,266, the share of adults with a bachelor's degree or higher is 23%, and roughly 8% of residents are in poverty. The public schools of Pinal County number 155 and enroll about 63,837.

Champion San Tan is the closest public school, about 0.8 miles away in a straight line. Poston Butte High School is one of several public schools in the area, with at least 8 others within five miles.

On the NCES locale scale, the school is Rural: Fringe.

Federal counts put enrollment at 1,467 in 2020-21 and 1,310 in 2024-25, an 11% decrease. Federal data show the ratio falling from 20.1:1 to 18.9:1.

The discussion area below is open to posts about school events, clubs, and volunteer needs. Questions from prospective families are welcome too.

Pinal County at a glance

View full county profile
Population
469,006
Census ACS
Median income
$80,266
Household, ACS
Bachelor's+
23%
Adults 25+
Poverty rate
8%
Below federal line
Schools in county
155
63,837 students

Quick facts

School name
Poston Butte High School
District
Florence Unified School District (4437)
Address
32375 N GANTZEL RD, San Tan Valley, AZ 85143
Phone
(480) 474-6100
County
Pinal County
Level
High
Grade range
07–12
Total enrollment
1,310
Teachers (FTE)
70
Student–teacher ratio
18.9:1
Locale
41-Rural: Fringe
NCES ID
040292002972
Charter school
No
Virtual school
No

Related schools

Other schools in Florence Unified School District (4437)
Other schools in San Tan Valley
Nearby schools

Frequently asked questions

About Poston Butte High School
What is the total enrollment at Poston Butte High School?
Poston Butte High School enrolls approximately 1,310 students in grades 07-12.
What age range does Poston Butte High School serve?
Poston Butte High School serves students from grade 07 through grade 12.
How many students per teacher at Poston Butte High School?
Approximately 18.9:1 students per teacher at Poston Butte High School.
What is the racial breakdown of students at Poston Butte High School?
At Poston Butte High School, the student body is approximately 40% White, 44% Hispanic, 8% Black, 1% Asian, 4% Two or more.
Is Poston Butte High School public or private?
Poston Butte High School is a public K-12 school, overseen by Florence Unified School District (4437).
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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