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Public School Review - Established 2003

Union Elementary District (4277)

3834 S 91st Ave
Tolleson, AZ 85353-9394
(District boundaries shown in map)
: 
3/
10
Bottom 50%
Tel: (623) 478-5005
www.unionesd.org

Top Rankings

Union Elementary District (4277) ranks among the top 20% of public school district in Arizona for:

Category
Attribute
Community Size
Largest student body (number of students) (Top 1%)
For the 2026 school year, there are 4 public schools serving 1,630 students in Union Elementary District (4277). This district's average testing ranking is 3/10, which is in the bottom 50% of public schools in Arizona.
Public Schools in Union Elementary District (4277) have an average math proficiency score of 12% (versus the Arizona public school average of 34%), and reading proficiency score of 26% (versus the 41% statewide average).
Minority enrollment is 96% of the student body (majority Hispanic), which is more than the Arizona public school average of 67% (majority Hispanic).

Overview

This School District
This State (AZ)
# Schools
4 Schools
2,487 Schools
# Students
1,630 Students
1,111,369 Students
# Teachers
89 Teachers
62,202 Teachers
Student-Teacher Ratio
18:1
18:1

Student By Grade

Comparison of Students By Grade Trends

GradeUnion Elementary District (4277)Arizona
Pre-K3228
Kind152101
1146107
2163112
3180117
4158114
5207118
6196118
7206118
8190120
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District Rank

Union Elementary District (4277), which is ranked within the bottom 50% of all 602 school districts in Arizona (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.
Definition of Terms
This School District
State Average (AZ)
#453 out of 618 school districts
(Bottom 50%)

Overall School District Rank Trends

YearUnion Elementary District (4277)
2023#453
2022#500
2021#462
2019#483
2018#494
2017#479
2016#475
2015#493
2014#433
2013#365
2012#331
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12%
34%

Math Proficiency Trends

YearUnion Elementary District (4277)Arizona
202312%34%
202213%35%
202112%32%
201925%45%
201823%45%
201723%42%
201622%39%
201523%38%
201447%63%
201352%63%
201256%63%
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26%
40%

Reading and Language Arts Proficiency Trends

YearUnion Elementary District (4277)Arizona
202226%40%
202123%39%
201929%45%
201823%44%
201725%42%
201624%40%
201523%38%
201467%79%
201368%78%
201268%77%
201166%77%
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15%
24%

Students by Ethnicity:

0.44
0.66

Comparison of Diversity Score Trends

YearUnion Elementary District (4277)Arizona
20240.450.65
20230.460.65
20220.450.65
20210.440.66
20200.410.65
20190.410.65
20180.400.65
20170.400.65
20160.420.65
20150.440.64
20140.460.64
20130.460.64
20120.480.64
20110.460.65
20100.460.64
20090.480.64
20080.500.63
20070.540.63
20060.590.63
20050.570.62
20040.540.63
20030.630.63
20020.480.62
20010.470.62
20000.470.62
19990.420.60
19980.390.59
19970.410.58
19960.400.58
19950.420.58
19940.340.57
19930.480.56
19920.400.56
19910.290.54
19900.240.53
19890.330.51
19880.580.50
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% American Indian
3%
5%

American Indian Student Percentage Comparison Over Years (1988-2024)

YearUnion Elementary District (4277)Arizona
20243%5%
20234%5%
20223%5%
20213%5%
20202%6%
20192%6%
20182%6%
20172%6%
20161%5%
20152%5%
20143%5%
20132%5%
20123%5%
20113%7%
20104%6%
20092%6%
20084%5%
20076%6%
20068%7%
200510%7%
200411%8%
200322%8%
200262%8%
200164%8%
200066%8%
199970%7%
199877%7%
199778%7%
199679%7%
199577%7%
199485%7%
199375%7%
199275%8%
199183%6%
199092%6%
198985%7%
198857%6%
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% Asian
1%
3%

Asian Student Percentage Comparison Over Years (2005-2024)

YearUnion Elementary District (4277)Arizona
20241%3%
20231%3%
20211%3%
20201%3%
20191%3%
20161%3%
20151%3%
20142%3%
20133%3%
20123%3%
20113%3%
20103%3%
20093%3%
20085%3%
20075%3%
20063%2%
20051%2%
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% Hispanic
73%
49%

Hispanic Student Percentage Comparison Over Years (1988-2024)

YearUnion Elementary District (4277)Arizona
202473%48%
202371%47%
202272%47%
202174%46%
202076%45%
201976%45%
201877%45%
201777%45%
201675%45%
201573%45%
201472%44%
201372%43%
201271%43%
201172%42%
201072%41%
200970%41%
200869%42%
200766%41%
200661%39%
200562%38%
200465%37%
200355%36%
200237%35%
200135%33%
200032%33%
199930%32%
199824%31%
199720%30%
199630%30%
199530%29%
199427%28%
199335%27%
199218%25%
199114%25%
199016%24%
198912%22%
198823%23%
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% Black
16%
6%

Black Student Percentage Comparison Over Years (2004-2024)

YearUnion Elementary District (4277)Arizona
202416%6%
202317%6%
202216%6%
202114%6%
202014%5%
201914%5%
201812%5%
201712%5%
201614%5%
201515%5%
201414%5%
201314%5%
201214%5%
201114%5%
201014%6%
200916%6%
200813%6%
200716%5%
200616%5%
200517%5%
200413%5%
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% White
4%
33%

White Student Percentage Comparison Over Years (1991-2024)

YearUnion Elementary District (4277)Arizona
20245%34%
20236%35%
20227%35%
20216%36%
20205%38%
20195%38%
20188%38%
20178%38%
20168%39%
20158%40%
20147%41%
20138%42%
20128%42%
20118%42%
20107%44%
20099%44%
20089%44%
20077%45%
200612%47%
200510%48%
200410%48%
200312%49%
20021%50%
20011%52%
20002%53%
19981%56%
19976%57%
19951%58%
19935%60%
19927%61%
19913%65%
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% Hawaiian
1%
n/a
% Two or more races
2%
4%

Two or More Races Student Percentage Comparison Over Years (2014-2024)

YearUnion Elementary District (4277)Arizona
20241%4%
20231%4%
20221%4%
20212%4%
20202%3%
20192%3%
20181%3%
20171%3%
20161%3%
20151%2%
20142%2%
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All Ethnic Groups

District Revenue and Spending

The revenue/student of $10,455 in this school district is less than the state median of $11,551. The school district revenue/student has grown by 17% over four school years.
The school district's spending/student of $10,513 is less than the state median of $11,452. The school district spending/student has grown by 20% over four school years.
Definition of Terms
This School District
This State (AZ)
Total Revenue
$17 MM
$12,837 MM

Total Revenues Trends

YearUnion Elementary District (4277)Arizona
2023$17 MM$4 MM
2022$16 MM$4 MM
2021$17 MM$4 MM
2020$16 MM$4 MM
2019$17 MM$4 MM
2018$14 MM$4 MM
2017$15 MM$4 MM
2016$15 MM$3 MM
2015$12 MM$3 MM
2014$12 MM$3 MM
2012$10 MM$3 MM
2011$12 MM$3 MM
2010$12 MM$3 MM
2009$12 MM$2 MM
2008$16 MM$2 MM
2007$18 MM$2 MM
2006$9 MM$2 MM
2005$11 MM$2 MM
2004$5 MM$2 MM
2003$2 MM$2 MM
2002$3 MM$2 MM
2001$2 MM$1 MM
2000$1 MM$8 MM
1999$1 MM$2 MM
1998$1 MM$2 MM
1997$1 MM$7 MM
1996$1 MM$6 MM
1995$1 MM$6 MM
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Spending
$17 MM
$12,727 MM

Total Expenditure Trends

YearUnion Elementary District (4277)Arizona
2023$17 MM$4 MM
2022$16 MM$4 MM
2021$17 MM$4 MM
2020$16 MM$4 MM
2019$17 MM$4 MM
2018$14 MM$4 MM
2017$15 MM$3 MM
2016$14 MM$3 MM
2015$13 MM$2 MM
2014$12 MM$3 MM
2012$12 MM$3 MM
2011$12 MM$2 MM
2010$13 MM$2 MM
2009$11 MM$2 MM
2008$12 MM$2 MM
2007$20 MM$2 MM
2006$11 MM$2 MM
2005$11 MM$2 MM
2004$5 MM$1 MM
2003$2 MM$1 MM
2002$3 MM$1 MM
2001$2 MM$2 MM
2000$1 MM$8 MM
1999$1 MM$2 MM
1998$1 MM$2 MM
1997$1 MM$6 MM
1996$1 MM$6 MM
1995$1 MM$6 MM
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Revenue / Student
$10,455
$11,551

Average Revenue Per Student Trends

YearUnion Elementary District (4277)Arizona
2023$10,113$10,782
2022$8,911$10,794
2021$10,545$11,986
2020$8,911$10,794
2019$9,216$11,173
2018$7,288$11,763
2017$7,714$10,306
2016$7,358$9,541
2015$5,932$9,449
2014$6,276$8,489
2012$5,935$9,312
2011$6,969$9,958
2010$7,134$9,449
2009$6,701$9,374
2008$8,999$9,689
2007$12,778$9,028
2006$8,433$7,988
2005$23,268$7,640
2004$13,505$7,113
2003$10,146$6,846
2002$35,438$7,000
2001$23,793$5,056
2000$13,233$26,222
1999$10,545$5,976
1998$8,757$5,422
1997$6,142$15,154
1995$7,459$5,429
1992$9,444$5,848
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Spending / Student
$10,513
$11,452

Average Expenditure Per Student Trends

YearUnion Elementary District (4277)Arizona
2023$10,170$10,054
2022$8,723$10,562
2021$10,605$11,177
2020$8,723$10,562
2019$9,292$10,609
2018$7,587$11,165
2017$7,560$9,883
2016$6,754$8,430
2015$6,276$8,879
2014$6,339$8,678
2012$6,728$9,270
2011$7,103$9,464
2010$7,548$8,879
2009$6,425$8,323
2008$6,543$8,177
2007$14,243$7,648
2006$10,027$7,012
2005$23,985$6,644
2004$12,169$6,165
2003$8,132$5,701
2002$36,384$6,081
2001$27,280$6,763
2000$12,836$24,897
1999$8,750$6,021
1998$7,198$5,233
1997$6,655$13,894
1995$6,303$5,519
1992$8,123$5,527
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Best Union Elementary District (4277) Public Schools (2026)

School
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Hurley Ranch Elementary School
(Math: 15% | Reading: 28%)
Rank:
3/
10
Bottom 50%
8950 W Illini Rd
Tolleson, AZ 85353
(623) 478-5100
Gr: 3-8 | 703 students Student-teacher ratio: 21:1 Minority enrollment: 95%
Rank: #22.
Dos Rios Elementary School
(Math: 8% | Reading: 23%)
Rank:
2/
10
Bottom 50%
2150 S 87th Ave
Tolleson, AZ 85353
(623) 474-7004
Gr: K-8 | 614 students Student-teacher ratio: 18:1 Minority enrollment: 96%
Rank: n/an/a
Union Connects
3834 S 91st Ave
Tolleson, AZ 85353
(623) 478-5005
Gr: K-8
Rank: n/an/a
Union Elementary School
3834 S 91st Ave
Tolleson, AZ 85353
(623) 478-5000
Gr: PK-2 | 313 students Student-teacher ratio: 15:1 Minority enrollment: 97%

Frequently Asked Questions

How many schools belong to Union Elementary District (4277)?
Union Elementary District (4277) manages 4 public schools serving 1,630 students.
What is the rank of Union Elementary District (4277)?
Union Elementary District (4277) is ranked #473 out of 602 school districts in Arizona (bottom 50%) based off of combined math and reading proficiency testing data for the 2022-2023 school year. This district ranks in the top 20% of Arizona school districts for: Largest student body (number of students) (Top 1%)
What is the racial composition of students in Union Elementary District (4277)?
73% of Union Elementary District (4277) students are Hispanic, 16% of students are Black, 4% of students are White, 3% of students are American Indian, 2% of students are Two or more races, 1% of students are Asian, and 1% of students are Hawaiian.
What is the student/teacher ratio of Union Elementary District (4277)?
Union Elementary District (4277) has a student/teacher ratio of 18:1, which is higher than the Arizona state average of 17:1.
What is Union Elementary District (4277)'s spending/student ratio?
The school district's spending/student of $10,513 is less than the state median of $11,452. The school district spending/student has grown by 20% over four school years.

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Quick Facts (2026)

  • District size: 4 schools
  • Grades: PK-08
  • Enrollment: 1,630 students
  • Student-Teacher Ratio: 18:1
  • Minority Enrollment: 96%
  • : Bottom 50% in AZ
  • : 12% (Btm 50%)
  • : 26% (Btm 50%)
  • : 15% (Btm 50%)
  • Source: National Center for Education Statistics (NCES), AZ Dept. of Education

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