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Union Elementary School

3834 S 91st Ave
Tolleson, AZ 85353

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Tel: (623) 478-5000

www.unionesd.org

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Union Elementary School serves 313 students in grades Prekindergarten-2.

The student-teacher ratio of 15:1 is lower than the Arizona state level of 17:1.

Minority enrollment is 97% of the student body (majority Hispanic), which is higher than the Arizona state average of 67% (majority Hispanic).

Quick Facts (2026)

Grades: Prekindergarten-2
Enrollment: 313 students
Student-Teacher Ratio: 15:1
Minority Enrollment: 97%
Source: National Center for Education Statistics (NCES), AZ Dept. of Education

School Overview

Union Elementary School's student population of 313 students has stayed relatively flat over five school years.

The teacher population of 21 teachers has grown by 40% over five school years.

Grades Offered

Grades Prekindergarten-2
(No virtual instruction)

View Data

Distribution of Students By Grade Trends
Grade	Union Elementary School
Pre-K	32
Kind	96
1	83
2	102

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Total Students

313 students

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Total Students Trends Over Years (1989-2025)
Year	Union Elementary School
2025	313
2024	348
2023	320
2022	339
2021	312
2020	341
2019	364
2018	440
2017	440
2016	328
2015	26
2014	21
2013	19
2012	16
2011	17
2010	17
2009	422
2008	308
2007	444
2006	439
2005	471
2004	372
2003	205
2002	73
2001	82
2000	73
1999	88
1998	100
1997	100
1996	93
1995	93
1994	74
1993	80
1992	81
1991	88
1990	83
1989	84

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Total Classroom Teachers

21 teachers

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Total Classroom Teachers Trends Over Years (1989-2025)
Year	Union Elementary School
2025	21
2024	20
2023	16
2022	16
2021	15
2020	16
2019	16
2018	22
2017	22
2016	14
2015	1
2014	1
2013	1
2012	1
2011	1
2010	1
2009	19
2008	13
2007	24
2006	16
2005	10
2004	17
2003	8
2002	7
2001	6
2000	6
1999	5
1998	7
1997	7
1996	6
1995	7
1994	6
1993	7
1992	7
1991	7
1990	7
1989	6

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Year Founded

2000

Colors

Blue and Gold

School Calendar

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School Rankings

The of Union Elementary School is 0.41, which is less than the diversity score at state average of 0.66. The school's diversity has stayed relatively flat over five school years.

This School

State Level (AZ)

Student-Teacher Ratio

15:1

17:1

View Data

Student-Teacher Ratio Comparison Over Years (1989-2025)
Year	Union Elementary School	Arizona	Union Elementary District (4277)
2025	15:1	17:1
2024	17:1	18:1	17:1
2023	20:1	18:1	20:1
2022	21:1	18:1	17:1
2021	21:1	17:1	20:1
2020	21:1	19:1	22:1
2019	23:1	19:1	22:1
2018	20:1	19:1	21:1
2017	20:1	19:1	21:1
2016	23:1	19:1	24:1
2015	26:1	19:1	24:1
2014	21:1	19:1	23:1
2013	19:1	19:1	22:1
2012	16:1	19:1	23:1
2011	17:1	19:1	22:1
2010	17:1	18:1	22:1
2009	22:1	18:1	21:1
2008	24:1	18:1	24:1
2007	19:1	19:1	22:1
2006	27:1	19:1	25:1
2005	47:1	19:1	47:1
2004	22:1	19:1	22:1
2003	26:1	19:1	26:1
2002	10:1	19:1	10:1
2001	14:1	19:1	14:1
2000	12:1	19:1	12:1
1999	18:1	19:1	18:1
1998	15:1	19:1	14:1
1997	15:1	19:1	14:1
1996	16:1	19:1	16:1
1995	13:1	19:1	13:1
1994	12:1	20:1	12:1
1993	11:1	20:1	11:1
1992	12:1	20:1	12:1
1991	13:1	20:1	13:1
1990	11:1	20:1	12:1
1989	14:1	20:1	14:1

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American Indian

View Data

American Indian Student Percentage Comparison Over Years (1989-2024)
Year	Union Elementary School	Arizona	Union Elementary District (4277)
2024	2%	5%	3%
2023	3%	5%	4%
2022	3%	5%	3%
2021	2%	5%	3%
2020	2%	6%	2%
2019	2%	6%	2%
2018	1%	6%	2%
2017	1%	6%	2%
2016	1%	5%	1%
2015	4%	5%	2%
2009	2%	6%	2%
2008	3%	5%	4%
2007	5%	6%	6%
2006	8%	7%	8%
2005	10%	7%	10%
2004	11%	8%	11%
2003	22%	8%	22%
2002	62%	8%	62%
2001	64%	8%	64%
2000	66%	8%	66%
1999	70%	7%	70%
1998	78%	7%	77%
1997	79%	7%	78%
1996	80%	7%	79%
1995	78%	7%	77%
1994	86%	7%	85%
1993	76%	7%	75%
1992	75%	8%	75%
1991	83%	6%	83%
1990	93%	6%	92%
1989	86%	7%	85%

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Hispanic

75%

49%

View Data

Hispanic Student Percentage Comparison Over Years (1988-2024)
Year	Union Elementary School	Arizona	Union Elementary District (4277)
2024	75%	48%	73%
2023	73%	47%	71%
2022	75%	47%	72%
2021	77%	46%	74%
2020	72%	45%	76%
2019	74%	45%	76%
2018	75%	45%	77%
2017	75%	45%	77%
2016	76%	45%	75%
2015	81%	45%	73%
2014	86%	44%	72%
2013	79%	43%	72%
2012	81%	43%	71%
2011	65%	42%	72%
2010	88%	41%	72%
2009	72%	41%	70%
2008	71%	42%	69%
2007	63%	41%	66%
2006	58%	39%	61%
2005	62%	38%	62%
2004	65%	37%	65%
2003	55%	36%	55%
2002	37%	35%	37%
2001	35%	33%	35%
2000	32%	33%	32%
1999	30%	32%	30%
1998	25%	31%	24%
1997	21%	30%	20%
1996	31%	30%	30%
1995	31%	29%	30%
1994	28%	28%	27%
1993	36%	27%	35%
1992	18%	25%	18%
1991	14%	25%	14%
1990	17%	24%	16%
1989	13%	22%	12%
1988	23%	23%	23%

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Black

17%

View Data

Black Student Percentage Comparison Over Years (2003-2024)
Year	Union Elementary School	Arizona	Union Elementary District (4277)
2024	16%	6%	16%
2023	16%	6%	17%
2022	15%	6%	16%
2021	14%	6%	14%
2020	14%	5%	14%
2019	14%	5%	14%
2018	10%	5%	12%
2017	10%	5%	12%
2016	12%	5%	14%
2015	12%	5%	15%
2014	10%	5%	14%
2013	16%	5%	14%
2012	13%	5%	14%
2011	12%	5%	14%
2009	15%	6%	16%
2008	11%	6%	13%
2007	20%	5%	16%
2006	19%	5%	16%
2005	17%	5%	17%
2004	13%	5%	13%
2003	11%	5%	11%

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White

33%

View Data

White Student Percentage Comparison Over Years (1991-2024)
Year	Union Elementary School	Arizona	Union Elementary District (4277)
2024	4%	34%	5%
2023	4%	35%	6%
2022	5%	35%	7%
2021	6%	36%	6%
2020	8%	38%	5%
2019	6%	38%	5%
2018	11%	38%	8%
2017	11%	38%	8%
2016	9%	39%	8%
2015	3%	40%	8%
2014	4%	41%	7%
2011	12%	42%	8%
2010	6%	44%	7%
2009	8%	44%	9%
2008	9%	44%	9%
2007	7%	45%	7%
2006	11%	47%	12%
2005	10%	48%	10%
2004	10%	48%	10%
2003	12%	49%	12%
2002	1%	50%	1%
2001	1%	52%	1%
2000	2%	53%	2%
1998	2%	56%	1%
1997	7%	57%	6%
1996	1%	57%
1995	2%	58%	1%
1994	1%	59%
1993	6%	60%	5%
1992	7%	61%	7%
1991	3%	65%	3%

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Hawaiian

n/a

Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2011-2024)
Year	Union Elementary School	Arizona	Union Elementary District (4277)
2024	2%	4%	1%
2023	3%	4%	1%
2022	2%	4%	1%
2021	1%	4%	2%
2020	2%	3%	2%
2019	3%	3%	2%
2018	3%	3%	1%
2017	3%	3%	1%
2016	2%	3%	1%
2012	6%	2%	1%
2011	5%	1%

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All Ethnic Groups

0.41

0.66

View Data

Diversity Score Comparison Over Years (1989-2025)
Year	Union Elementary School	Arizona	Union Elementary District (4277)
2025	0.41	0.65
2024	0.41	0.65	0.45
2023	0.44	0.65	0.46
2022	0.42	0.65	0.45
2021	0.39	0.66	0.44
2020	0.46	0.65	0.41
2019	0.43	0.65	0.41
2018	0.42	0.65	0.40
2017	0.42	0.65	0.40
2016	0.40	0.65	0.42
2015	0.33	0.64	0.44
2014	0.26	0.64	0.46
2013	0.35	0.64	0.46
2012	0.33	0.64	0.48
2011	0.56	0.65	0.46
2010	0.22	0.64	0.46
2009	0.46	0.64	0.48
2008	0.48	0.63	0.50
2007	0.56	0.63	0.54
2006	0.61	0.63	0.59
2005	0.57	0.62	0.57
2004	0.54	0.63	0.54
2003	0.63	0.63	0.63
2002	0.48	0.62	0.48
2001	0.49	0.62	0.47
2000	0.48	0.62	0.47
1999	0.42	0.60	0.42
1998	0.40	0.59	0.39
1997	0.42	0.58	0.41
1996	0.40	0.58	0.40
1995	0.42	0.58	0.42
1994	0.35	0.57	0.34
1993	0.49	0.56	0.48
1992	0.42	0.56	0.40
1991	0.31	0.54	0.29
1990	0.24	0.53	0.24
1989	0.34	0.51	0.33

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Eligible for

41%

View Data

Free Lunch Eligibility Comparison Over Years (2004-2025)
Year	Union Elementary School	Arizona	Union Elementary District (4277)
2025	3%	41%
2024	2%	40%	44%
2023	60%	39%	54%
2022	60%	29%	54%
2021	3%	42%	47%
2020	60%	43%	72%
2019	71%	43%	72%
2018	1%	42%	44%
2017	1%	42%	44%
2016	1%	33%	43%
2011	18%	36%	73%
2009	69%	39%	64%
2008	9%	29%	9%
2007	66%	32%	60%
2006	79%	37%	76%
2005	82%	40%	82%
2004	78%	37%	78%

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Eligible for

100%

10%

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2004-2025)
Year	Union Elementary School	Arizona	Union Elementary District (4277)
2025	100%	10%
2024	100%	10%	60%
2023	7%	7%	10%
2022	7%	2%	9%
2021	100%	9%	57%
2020	7%	7%	12%
2019	11%	7%	12%
2018	97%	9%	55%
2017	97%	9%	55%
2009	10%	10%	10%
2008	21%	9%	19%
2007	18%	9%	16%
2006	20%	8%	18%
2005	17%	8%	17%
2004	15%	8%	15%

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School Statewide Testing

View Education Department Test Scores

School District Name

Union Elementary District (4277)

Source: National Center for Education Statistics (NCES), AZ Dept. of Education

School Notes

School Mascot: Cougars

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Frequently Asked Questions

How many students attend Union Elementary School?

313 students attend Union Elementary School.

What is the racial composition of the student body?

75% of Union Elementary School students are Hispanic, 17% of students are Black, 3% of students are White, 2% of students are American Indian, 2% of students are Two or more races, and 1% of students are Hawaiian.

What is the student-teacher ratio of Union Elementary School?

Union Elementary School has a student ration of 15:1, which is lower than the Arizona state average of 17:1.

What grades does Union Elementary School offer ?

Union Elementary School offers enrollment in grades Prekindergarten-2 (No virtual instruction).

What school district is Union Elementary School part of?

Union Elementary School is part of Union Elementary District (4277).

In what neighborhood is Union Elementary School located?

Union Elementary School is located in the Estrella Village neighborhood of Tolleson, AZ. There are 5 other public schools located in Estrella Village.

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Quick Facts (2026)

Grades: Prekindergarten-2
Enrollment: 313 students
Student-Teacher Ratio: 15:1
Minority Enrollment: 97%
Source: National Center for Education Statistics (NCES), AZ Dept. of Education

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