Walter Zimmerman Elementary School (Ranked Bottom 50% for 2026)

11050 Linden Ave.
Bloomington, CA 92316

( shown in map)

Bottom 50%

Serving 526 students in grades Kindergarten-6, Walter Zimmerman Elementary School ranks in the bottom 50% of all schools in California for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).

The percentage of students achieving is 20% (which is lower than the California state average of 34%). The percentage of students achieving is 38% (which is lower than the California state average of 47%).

The student-teacher ratio of 23:1 is higher than the California state level of 21:1.

Minority enrollment is 99% of the student body (majority Hispanic), which is higher than the California state average of 80% (majority Hispanic).

Quick Facts (2026)

Grades: Kindergarten-6
Enrollment: 526 students
Student-Teacher Ratio: 23:1
Minority Enrollment: 99%
: Bottom 50% in CA
: 20% (Btm 50%)
: 38% (Btm 50%)
: 20-24% (Btm 50%)
Source: National Center for Education Statistics (NCES), CA Dept. of Education

<�鶹��ý class='so-dt-title' id="overview">School Overview

Walter Zimmerman Elementary School's student population of 526 students has declined by 8% over five school years.

The teacher population of 23 teachers has stayed relatively flat over five school years.

Grades Offered

Grades Kindergarten-6

View Data

Distribution of Students By Grade Trends
Grade	Walter Zimmerman Elementary School
Kind	87
1	72
2	58
3	77
4	70
5	70
6	92

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Total Students

526 students

View Data

Total Students Trends Over Years (1988-2024)
Year	Walter Zimmerman Elementary School
2024	526
2023	559
2022	558
2021	578
2020	632
2019	632
2018	716
2017	716
2016	755
2015	753
2014	776
2013	743
2012	766
2011	791
2010	814
2009	813
2008	817
2007	816
2006	902
2005	933
2004	898
2003	870
2002	881
2001	882
2000	839
1999	825
1998	776
1997	772
1996	760
1995	706
1994	720
1993	721
1992	747
1991	763
1990	763
1989	700
1988	705

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Gender %

Total Classroom Teachers

23 teachers

View Data

Total Classroom Teachers Trends Over Years (1987-2024)
Year	Walter Zimmerman Elementary School
2024	23
2023	23
2022	23
2021	23
2020	26
2019	26
2018	30
2017	30
2016	30
2015	30
2014	32
2013	33
2012	33
2010	39
2009	40
2008	44
2007	42
2006	44
2005	42
2004	41
2003	40
2002	43
2001	42
2000	40
1999	41
1998	38
1997	34
1996	29
1995	28
1994	28
1993	29
1992	34
1991	33
1990	27
1989	25
1988	24
1987	23

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Year Founded

1966

<�鶹��ý class='so-dt-title' id="school-rankings">School Rankings

Walter Zimmerman Elementary School ranks within the bottom 50% of all 9,523 schools in California (based off of combined math and reading proficiency testing data).

The of Walter Zimmerman Elementary School is 0.04, which is less than the diversity score at state average of 0.63. The school's diversity has stayed relatively flat over five school years.

This School

State Level (CA)

#5982 out of 9523 schools
(Bottom 50%)

View Data

Overall School Rank Trends Over Years (2010-2023)
Year	Walter Zimmerman Elementary School
2023	#5982
2022	#6411
2019	#5592
2018	#6187
2017	#6003
2016	#6748
2015	#6844
2013	#4657
2012	#5431
2011	#6699
2010	#7932

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20%

34%

View Data

Math Proficiency Comparison Over Years (2010-2023)
Year	Walter Zimmerman Elementary School	California	Colton Joint Unified School District
2023	20%	34%	19%
2022	16%	33%	17%
2019	31%	40%	25%
2018	26%	39%	24%
2017	25%	38%	23%
2016	17%	37%	21%
2015	12%	34%	19%
2013	62%	59%	46%
2012	60%	59%	47%
2011	53%	58%	46%
2010	37%	56%	43%

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38%

47%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2010-2022)
Year	Walter Zimmerman Elementary School	California	Colton Joint Unified School District
2022	38%	47%	31%
2019	43%	51%	39%
2018	39%	50%	24%
2017	38%	48%	36%
2016	37%	48%	36%
2015	31%	44%	33%
2013	47%	57%	45%
2012	46%	58%	47%
2011	40%	56%	45%
2010	35%	54%	41%

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20-24%

29%

Student-Teacher Ratio

23:1

21:1

View Data

Student-Teacher Ratio Comparison Over Years (1987-2024)
Year	Walter Zimmerman Elementary School	California	Colton Joint Unified School District
2024	23:1	21:1
2023	24:1	22:1	21:1
2022	24:1	22:1	21:1
2021	25:1	22:1	22:1
2020	24:1	23:1	23:1
2019	24:1	23:1	23:1
2018	24:1	23:1	23:1
2017	24:1	23:1	23:1
2016	25:1	24:1	24:1
2015	25:1	24:1	25:1
2014	24:1	24:1	24:1
2013	23:1	24:1	23:1
2012	23:1	24:1	24:1
2010	21:1	22:1	22:1
2009	21:1	21:1	23:1
2008	19:1	18:1	20:1
2007	19:1	22:1	22:1
2006	21:1	22:1	21:1
2005	22:1	22:1	22:1
2004	22:1	22:1	23:1
2003	22:1	21:1	22:1
2002	20:1	21:1	21:1
2001	21:1	21:1	21:1
2000	21:1	22:1	22:1
1999	20:1	22:1	22:1
1998	20:1	22:1	22:1
1997	23:1	24:1	24:1
1996	27:1	25:1	25:1
1995	25:1	25:1	26:1
1994	26:1	25:1	26:1
1993	25:1	25:1	26:1
1992	22:1	24:1	26:1
1991	23:1	24:1	25:1
1990	28:1	24:1	26:1
1989	28:1	24:1	26:1
1988	29:1	24:1	27:1
1987	29:1	24:1	26:1

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American Indian

n/a

View Data

American Indian Student Percentage Comparison Over Years (1988-2008)
Year	Walter Zimmerman Elementary School	California	Colton Joint Unified School District
2008	1%	1%
2007	2%	2%	1%
2006	1%	1%
2005	1%	2%	1%
2000	1%	1%	1%
1999	2%	1%	2%
1998	1%	1%	1%
1997	1%	1%	1%
1996	1%	1%	1%
1995	1%	1%	1%
1994	2%	1%	1%
1993	1%	1%	1%
1992	1%	1%	1%
1991	2%	1%	1%
1990	1%	1%	1%
1989	1%	1%	1%
1988	1%	1%	2%

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Asian

12%

View Data

Asian Student Percentage Comparison Over Years (1988-2024)
Year	Walter Zimmerman Elementary School	California	Colton Joint Unified School District
2024	1%	12%
2023	1%	12%	3%
2014	1%	11%	3%
2013	1%	11%	3%
2012	2%	11%	3%
2011	1%	11%	4%
2009	1%	11%	5%
2008	2%	12%	5%
2007	2%	12%	4%
2006	1%	12%	5%
2005	2%	12%	4%
2004	2%	12%	4%
2003	2%	11%	4%
2002	1%	11%	5%
2001	1%	11%	5%
2000	1%	11%	4%
1999	2%	11%	4%
1998	1%	11%	4%
1997	1%	11%	4%
1996	3%	11%	4%
1995	3%	11%	4%
1994	2%	11%	4%
1993	1%	11%	4%
1992	1%	11%	4%
1991	2%	11%	4%
1990	1%	10%	4%
1989	1%	10%	3%
1988	2%	10%	3%

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Hispanic

98%

56%

View Data

Hispanic Student Percentage Comparison Over Years (1988-2024)
Year	Walter Zimmerman Elementary School	California	Colton Joint Unified School District
2024	98%	56%
2023	98%	55%	87%
2022	98%	56%	87%
2021	97%	56%	86%
2020	97%	55%	85%
2019	97%	55%	85%
2018	97%	54%	85%
2017	97%	54%	85%
2016	97%	54%	84%
2015	97%	54%	76%
2014	97%	53%	82%
2013	95%	53%	82%
2012	94%	52%	82%
2011	94%	51%	82%
2010	94%	50%	80%
2009	93%	49%	78%
2008	93%	50%	77%
2007	89%	49%	76%
2006	89%	48%	75%
2005	87%	47%	73%
2004	87%	46%	70%
2003	85%	45%	68%
2002	83%	44%	67%
2001	81%	43%	66%
2000	80%	42%	66%
1999	77%	41%	64%
1998	77%	40%	64%
1997	74%	40%	62%
1996	72%	39%	60%
1995	70%	38%	60%
1994	68%	37%	57%
1993	61%	36%	56%
1992	59%	35%	54%
1991	55%	34%	52%
1990	52%	33%	49%
1989	47%	31%	48%
1988	44%	30%	46%

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Black

n/a

View Data

Black Student Percentage Comparison Over Years (1990-2022)
Year	Walter Zimmerman Elementary School	California	Colton Joint Unified School District
2022	1%	5%	5%
2021	1%	5%	5%
2020	1%	5%	6%
2019	1%	5%	6%
2018	1%	6%	6%
2017	1%	6%	6%
2016	1%	6%	6%
2014	1%	6%	6%
2013	1%	6%	6%
2011	1%	7%	6%
2010	1%	7%	7%
2009	1%	7%	7%
2008	2%	8%	8%
2007	2%	8%	8%
2006	3%	8%	8%
2005	3%	8%	9%
2004	4%	8%	9%
2003	3%	8%	10%
2002	5%	8%	10%
2001	4%	8%	9%
2000	4%	9%	9%
1999	5%	9%	9%
1998	5%	9%	9%
1997	4%	9%	9%
1996	3%	9%	9%
1995	3%	9%	7%
1994	4%	9%	7%
1993	4%	9%	6%
1992	4%	9%	6%
1991	5%	9%	7%
1990	3%	9%	6%

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White

20%

View Data

White Student Percentage Comparison Over Years (1988-2024)
Year	Walter Zimmerman Elementary School	California	Colton Joint Unified School District
2024	1%	20%
2023	1%	21%	4%
2022	1%	21%	5%
2021	1%	22%	5%
2020	1%	23%	6%
2019	1%	23%	6%
2018	2%	24%	7%
2017	2%	24%	7%
2016	2%	24%	8%
2015	3%	24%	8%
2014	1%	25%	8%
2013	3%	25%	8%
2012	4%	26%	8%
2011	4%	27%	8%
2010	4%	27%	9%
2009	4%	28%	10%
2008	2%	29%	10%
2007	5%	29%	11%
2006	6%	31%	12%
2005	7%	31%	13%
2004	7%	32%	15%
2003	10%	34%	17%
2002	11%	35%	18%
2001	14%	36%	20%
2000	14%	37%	20%
1999	14%	38%	21%
1998	16%	39%	22%
1997	20%	39%	24%
1996	21%	40%	26%
1995	23%	41%	28%
1994	24%	42%	31%
1993	33%	43%	33%
1992	35%	44%	35%
1991	36%	45%	36%
1990	43%	47%	40%
1989	48%	49%	42%
1988	50%	50%	44%

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Hawaiian

n/a

View Data

Native Hawaiian or Pacific Islander Student Percentage Comparison Over Years (2009-2010)
Year	Walter Zimmerman Elementary School	California	Colton Joint Unified School District
2010	1%	1%
2009	1%	1%

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Two or more races

n/a

All Ethnic Groups

0.04

0.63

View Data

Diversity Score Comparison Over Years (1988-2024)
Year	Walter Zimmerman Elementary School	California	Colton Joint Unified School District
2024	0.04	0.63
2023	0.04	0.64	0.23
2022	0.04	0.63	0.24
2021	0.06	0.62	0.25
2020	0.06	0.63	0.28
2019	0.06	0.63	0.28
2018	0.06	0.64	0.28
2017	0.06	0.64	0.28
2016	0.06	0.64	0.29
2015	0.06	0.64	0.33
2014	0.07	0.65	0.31
2013	0.10	0.65	0.32
2012	0.12	0.65	0.32
2011	0.13	0.67	0.34
2010	0.12	0.67	0.36
2009	0.13	0.71	0.37
2008	0.14	0.65	0.39
2007	0.21	0.67	0.41
2006	0.21	0.66	0.42
2005	0.25	0.67	0.45
2004	0.24	0.67	0.47
2003	0.27	0.67	0.50
2002	0.30	0.67	0.50
2001	0.33	0.67	0.51
2000	0.34	0.67	0.52
1999	0.41	0.67	0.54
1998	0.38	0.67	0.54
1997	0.41	0.67	0.55
1996	0.44	0.67	0.56
1995	0.46	0.67	0.56
1994	0.49	0.67	0.58
1993	0.52	0.67	0.58
1992	0.53	0.67	0.59
1991	0.57	0.67	0.59
1990	0.55	0.66	0.60
1989	0.55	0.65	0.60
1988	0.56	0.65	0.59

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Eligible for

84%

54%

View Data

Free Lunch Eligibility Comparison Over Years (1993-2024)
Year	Walter Zimmerman Elementary School	California	Colton Joint Unified School District
2024	84%	54%
2023	83%	51%	69%
2022	70%	51%	57%
2021	83%	53%	74%
2020	81%	52%	70%
2019	81%	52%	70%
2018	80%	49%	68%
2017	80%	49%	68%
2016	83%	50%	69%
2015	88%	50%	71%
2014	88%	49%	71%
2013	87%	48%	71%
2011	85%	46%	67%
2010	79%	46%	63%
2009	76%	43%	57%
2008	73%	41%	53%
2007	69%	40%	51%
2006	57%	40%	41%
2005	61%	40%	47%
2004	60%	40%	43%
2003	53%	39%	38%
2002	63%	39%	40%
2001	63%	39%	41%
2000	69%	40%	45%
1999	66%	40%	45%
1998	77%	47%	51%
1997	74%	47%	46%
1996	74%	46%	45%
1995	73%	45%	48%
1994	66%	43%	43%
1993	61%	41%	42%

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Eligible for

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (1999-2024)
Year	Walter Zimmerman Elementary School	California	Colton Joint Unified School District
2024	9%	8%
2023	12%	8%	13%
2022	5%	7%	4%
2021	10%	6%	11%
2020	1%	7%	7%
2019	1%	7%	7%
2018	11%	9%	11%
2017	11%	9%	11%
2016	10%	9%	10%
2015	6%	9%	8%
2014	7%	9%	10%
2013	6%	7%	8%
2011	6%	8%	8%
2010	10%	9%	12%
2009	14%	10%	13%
2008	17%	10%	13%
2007	18%	10%	13%
2006	13%	9%	10%
2005	14%	9%	11%
2004	16%	9%	12%
2003	15%	9%	12%
2002	13%	8%	11%
2001	15%	8%	11%
2000	14%	7%	10%
1999	14%	7%	9%

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School Statewide Testing

School District Name

Colton Joint Unified School District

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

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<�鶹��ý class='so-dt-title' id='faq'>Frequently Asked Questions

What is Walter Zimmerman Elementary School's ranking?

Walter Zimmerman Elementary School is ranked #5982 out of 9,523 schools, which ranks it among the bottom 50% of public schools in California.

What percent of students have achieved state testing proficiency in math and reading?

20% of students have achieved math proficiency (compared to the 34% CA state average), while 38% of students have achieved reading proficiency (compared to the 47% CA state average).

How many students attend Walter Zimmerman Elementary School?

526 students attend Walter Zimmerman Elementary School.

What is the racial composition of the student body?

98% of Walter Zimmerman Elementary School students are Hispanic, 1% of students are Asian, and 1% of students are White.

What is the student-teacher ratio of Walter Zimmerman Elementary School?

Walter Zimmerman Elementary School has a student ration of 23:1, which is higher than the California state average of 21:1.

What grades does Walter Zimmerman Elementary School offer ?

Walter Zimmerman Elementary School offers enrollment in grades Kindergarten-6

What school district is Walter Zimmerman Elementary School part of?

Walter Zimmerman Elementary School is part of Colton Joint Unified School District.

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