Mary B. Lewis Elementary School (Ranked Bottom 50% for 2025)

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Mary B. Lewis Elementary School

18040 San Bernardino Ave.
Bloomington, CA 92316

( shown in map)

Bottom 50%

Serving 575 students in grades Kindergarten-6, Mary B. Lewis 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 16% (which is lower than the California state average of 33%). The percentage of students achieving is 37% (which is lower than the California state average of 47%).

The student:teacher ratio of 24:1 is higher than the California state level of 21:1.

Minority enrollment is 96% of the student body (majority Hispanic), which is higher than the California state average of 80% (majority Hispanic).

Quick Stats (2025)

Grades: Kindergarten-6
Enrollment: 575 students
Student:Teacher Ratio: 24:1
Minority Enrollment: 96%
: Bottom 50% in CA
: 16% (Btm 50%)
: 37% (Btm 50%)
: 25-29% (Top 50%)
Source: National Center for Education Statistics (NCES), CA Dept. of Education

Top Rankings

Mary B. Lewis Elementary School ranks among the top 20% of public schools in California for:

School Overview

Mary B. Lewis Elementary School's student population of 575 students has declined by 9% over five school years.

The teacher population of 24 teachers has stayed relatively flat over five school years.

Grades Offered

Grades Kindergarten-6

View Data

Distribution of Students By Grade Trends
Grade	Mary B. Lewis Elementary School
Kind	87
1	61
2	78
3	84
4	91
5	83
6	91

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Total Students

575 students

View Data

Total Students Trends Over Years (1987-2023)
Year	Mary B. Lewis Elementary School
2023	585
2022	567
2021	584
2020	634
2019	634
2018	720
2017	720
2016	729
2015	708
2014	739
2013	734
2012	775
2011	793
2010	805
2009	820
2008	821
2007	839
2006	874
2005	855
2004	907
2003	885
2002	839
2001	802
2000	784
1999	729
1998	700
1997	690
1996	662
1995	663
1994	688
1993	667
1992	679
1991	642
1990	641
1989	585
1988	557
1987	547

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Gender %

Total Classroom Teachers

24 teachers

View Data

Total Classroom Teachers Trends Over Years (1990-2023)
Year	Mary B. Lewis Elementary School
2023	24
2022	24
2021	28
2020	25
2019	25
2018	30
2017	30
2016	30
2015	30
2014	29
2013	33
2012	33
2010	40
2009	39
2008	43
2007	41
2006	43
2005	41
2004	42
2003	39
2002	39
2001	39
2000	36
1999	33
1998	31
1997	27
1996	23
1995	24
1994	24
1993	25
1992	24
1991	24
1990	24

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School Calendar

School Rankings

Mary B. Lewis Elementary School ranks within the bottom 50% of all 9,602 schools in California (based off of combined math and reading proficiency testing data).

The of Mary B. Lewis Elementary School is 0.25, 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)

#6479 out of 9602 schools
(Bottom 50%)

View Data

Overall School Rank Trends Over Years (2010-2022)
Year	Mary B. Lewis Elementary School
2022	#6479
2019	#7384
2018	#8254
2017	#8256
2016	#8333
2015	#7505
2014	#2390
2013	#7296
2012	#8147
2011	#7678
2010	#7789

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16%

33%

View Data

Math Proficiency Comparison Over Years (2010-2022)
Year	Mary B. Lewis Elementary School	California	Colton Joint Unified School District
2022	16%	33%	17%
2019	21%	40%	25%
2018	15%	39%	24%
2017	16%	38%	23%
2016	15%	37%	21%
2015	14%	34%	19%
2014	50%	63%	47%
2013	40%	59%	46%
2012	45%	59%	47%
2011	49%	58%	46%
2010	45%	56%	43%

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37%

47%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2010-2022)
Year	Mary B. Lewis Elementary School	California	Colton Joint Unified School District
2022	37%	47%	31%
2019	35%	51%	39%
2018	27%	50%	24%
2017	25%	48%	36%
2016	23%	48%	36%
2015	21%	44%	33%
2014	50%	58%	47%
2013	40%	57%	45%
2012	33%	58%	47%
2011	33%	56%	45%
2010	31%	54%	41%

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25-29%

29%

Student : Teacher Ratio

24:1

21:1

View Data

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

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American Indian

n/a

View Data

American Indian Student Percentage Comparison Over Years (1989-2014)
Year	Mary B. Lewis Elementary School	California	Colton Joint Unified School District
2014	1%	1%
2013	1%	1%
2012	2%	1%
2011	2%	1%
2010	1%	1%
2009	2%	1%
2008	2%	1%
2007	2%	2%	1%
2005	1%	2%	1%
2004	2%	2%	2%
2003	1%	2%	1%
2002	1%	2%
2001	1%	2%
2000	2%	1%	1%
1999	4%	1%	2%
1998	2%	1%	1%
1997	1%	1%	1%
1996	2%	1%	1%
1995	1%	1%	1%
1994	1%	1%	1%
1993	1%	1%	1%
1992	2%	1%	1%
1991	2%	1%	1%
1990	2%	1%	1%
1989	3%	1%	1%

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Asian

n/a

12%

View Data

Asian Student Percentage Comparison Over Years (1988-2015)
Year	Mary B. Lewis Elementary School	California	Colton Joint Unified School District
2015	1%	11%	4%
2010	1%	11%	4%
2006	2%	12%	5%
2005	1%	12%	4%
2004	1%	12%	4%
2003	1%	11%	4%
2002	1%	11%	5%
2001	1%	11%	5%
2000	2%	11%	4%
1999	2%	11%	4%
1998	1%	11%	4%
1997	2%	11%	4%
1996	2%	11%	4%
1995	2%	11%	4%
1994	2%	11%	4%
1993	1%	11%	4%
1992	1%	11%	4%
1991	2%	11%	4%
1990	2%	10%	4%
1989	2%	10%	3%
1988	2%	10%	3%

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Hispanic

86%

56%

View Data

Hispanic Student Percentage Comparison Over Years (1991-2023)
Year	Mary B. Lewis Elementary School	California	Colton Joint Unified School District
2023	88%	55%	87%
2022	90%	56%	87%
2021	91%	56%	86%
2020	90%	55%	85%
2019	90%	55%	85%
2018	91%	54%	85%
2017	91%	54%	85%
2016	90%	54%	84%
2015	90%	54%	76%
2014	89%	53%	82%
2013	88%	53%	82%
2012	89%	52%	82%
2011	88%	51%	82%
2010	87%	50%	80%
2009	86%	49%	78%
2008	85%	50%	77%
2007	83%	49%	76%
2006	83%	48%	75%
2005	81%	47%	73%
2004	78%	46%	70%
2003	75%	45%	68%
2002	72%	44%	67%
2001	67%	43%	66%
2000	68%	42%	66%
1999	67%	41%	64%
1998	62%	40%	64%
1997	58%	40%	62%
1996	57%	39%	60%
1995	55%	38%	60%
1994	48%	37%	57%
1993	46%	36%	56%
1992	41%	35%	54%
1991	42%	34%	52%

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Black

View Data

Black Student Percentage Comparison Over Years (1991-2023)
Year	Mary B. Lewis Elementary School	California	Colton Joint Unified School District
2023	6%	5%	5%
2022	5%	5%	5%
2021	4%	5%	5%
2020	3%	5%	6%
2019	3%	5%	6%
2018	3%	6%	6%
2017	3%	6%	6%
2016	3%	6%	6%
2015	3%	6%	7%
2014	3%	6%	6%
2013	2%	6%	6%
2012	3%	6%	6%
2011	3%	7%	6%
2010	5%	7%	7%
2009	5%	7%	7%
2008	5%	8%	8%
2007	6%	8%	8%
2006	6%	8%	8%
2005	5%	8%	9%
2004	7%	8%	9%
2003	7%	8%	10%
2002	9%	8%	10%
2001	9%	8%	9%
2000	10%	9%	9%
1999	8%	9%	9%
1998	10%	9%	9%
1997	9%	9%	9%
1996	5%	9%	9%
1995	5%	9%	7%
1994	5%	9%	7%
1993	6%	9%	6%
1992	4%	9%	6%
1991	2%	9%	7%

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White

20%

View Data

White Student Percentage Comparison Over Years (1991-2023)
Year	Mary B. Lewis Elementary School	California	Colton Joint Unified School District
2023	5%	21%	4%
2022	4%	21%	5%
2021	4%	22%	5%
2020	5%	23%	6%
2019	5%	23%	6%
2018	5%	24%	7%
2017	5%	24%	7%
2016	6%	24%	8%
2015	6%	24%	8%
2014	6%	25%	8%
2013	7%	25%	8%
2012	6%	26%	8%
2011	7%	27%	8%
2010	6%	27%	9%
2009	7%	28%	10%
2008	8%	29%	10%
2007	9%	29%	11%
2006	9%	31%	12%
2005	11%	31%	13%
2004	12%	32%	15%
2003	15%	34%	17%
2002	17%	35%	18%
2001	21%	36%	20%
2000	18%	37%	20%
1999	19%	38%	21%
1998	25%	39%	22%
1997	30%	39%	24%
1996	34%	40%	26%
1995	37%	41%	28%
1994	44%	42%	31%
1993	46%	43%	33%
1992	52%	44%	35%
1991	52%	45%	36%

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Hawaiian

n/a

Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2013-2023)
Year	Mary B. Lewis Elementary School	California	Colton Joint Unified School District
2023	1%	6%	1%
2022	1%	5%	1%
2021	1%	5%	1%
2020	2%	4%	1%
2019	2%	4%	1%
2018	1%	4%
2017	1%	4%
2016	1%	4%
2014	1%	3%	1%
2013	1%	3%	1%

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All Ethnic Groups

0.25

0.63

View Data

Diversity Score Comparison Over Years (1991-2023)
Year	Mary B. Lewis Elementary School	California	Colton Joint Unified School District
2023	0.22	0.64	0.23
2022	0.19	0.63	0.24
2021	0.17	0.62	0.25
2020	0.19	0.63	0.28
2019	0.19	0.63	0.28
2018	0.17	0.64	0.28
2017	0.17	0.64	0.28
2016	0.19	0.64	0.29
2015	0.19	0.64	0.33
2014	0.21	0.65	0.31
2013	0.22	0.65	0.32
2012	0.21	0.65	0.32
2011	0.22	0.67	0.34
2010	0.24	0.67	0.36
2009	0.26	0.71	0.37
2008	0.27	0.65	0.39
2007	0.30	0.67	0.41
2006	0.30	0.66	0.42
2005	0.33	0.67	0.45
2004	0.38	0.67	0.47
2003	0.41	0.67	0.50
2002	0.45	0.67	0.50
2001	0.50	0.67	0.51
2000	0.50	0.67	0.52
1999	0.53	0.67	0.54
1998	0.55	0.67	0.54
1997	0.57	0.67	0.55
1996	0.56	0.67	0.56
1995	0.56	0.67	0.56
1994	0.58	0.67	0.58
1993	0.58	0.67	0.58
1992	0.57	0.67	0.59
1991	0.56	0.67	0.59

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Eligible for

84%

54%

View Data

Free Lunch Eligibility Comparison Over Years (1992-2023)
Year	Mary B. Lewis Elementary School	California	Colton Joint Unified School District
2023	81%	51%	69%
2022	66%	51%	57%
2021	80%	53%	74%
2020	86%	52%	70%
2019	86%	52%	70%
2018	80%	49%	68%
2017	80%	49%	68%
2016	80%	50%	69%
2015	85%	50%	71%
2014	87%	49%	71%
2013	85%	48%	71%
2011	83%	46%	67%
2010	79%	46%	63%
2009	74%	43%	57%
2008	74%	41%	53%
2007	68%	40%	51%
2006	59%	40%	41%
2005	65%	40%	47%
2004	62%	40%	43%
2003	51%	39%	38%
2002	57%	39%	40%
2001	63%	39%	41%
2000	68%	40%	45%
1999	71%	40%	45%
1998	78%	47%	51%
1997	66%	47%	46%
1996	64%	46%	45%
1995	73%	45%	48%
1994	64%	43%	43%
1993	63%	41%	42%
1992	58%	38%	38%

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Eligible for

10%

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2002-2023)
Year	Mary B. Lewis Elementary School	California	Colton Joint Unified School District
2023	12%	8%	13%
2022	2%	7%	4%
2021	9%	6%	11%
2020	2%	7%	7%
2019	2%	7%	7%
2018	9%	9%	11%
2017	9%	9%	11%
2016	10%	9%	10%
2015	5%	9%	8%
2014	7%	9%	10%
2013	6%	7%	8%
2011	7%	8%	8%
2010	8%	9%	12%
2009	14%	10%	13%
2008	14%	10%	13%
2007	14%	10%	13%
2006	11%	9%	10%
2005	15%	9%	11%
2004	16%	9%	12%
2003	15%	9%	12%
2002	18%	8%	11%

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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

Profile last updated: 02/09/2025

Frequently Asked Questions

What is Mary B. Lewis Elementary School's ranking?

Mary B. Lewis Elementary School is ranked #6479 out of 9,602 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?

16% of students have achieved math proficiency (compared to the 33% CA state average), while 37% of students have achieved reading proficiency (compared to the 47% CA state average).

How many students attend Mary B. Lewis Elementary School?

575 students attend Mary B. Lewis Elementary School.

What is the racial composition of the student body?

86% of Mary B. Lewis Elementary School students are Hispanic, 9% of students are Black, 4% of students are White, and 1% of students are Two or more races.

What is the student:teacher ratio of Mary B. Lewis Elementary School?

Mary B. Lewis Elementary School has a student ration of 24:1, which is higher than the California state average of 21:1.

What grades does Mary B. Lewis Elementary School offer ?

Mary B. Lewis Elementary School offers enrollment in grades Kindergarten-6

What school district is Mary B. Lewis Elementary School part of?

Mary B. Lewis Elementary School is part of Colton Joint Unified School District.

School Reviews

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Quick Stats (2025)

Grades: Kindergarten-6
Enrollment: 575 students
Student:Teacher Ratio: 24:1
Minority Enrollment: 96%
: Bottom 50%
: 16% (Btm 50%)
: 37% (Btm 50%)
: 25-29% (Top 50%)
Source: National Center for Education Statistics (NCES), CA Dept. of Education