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J. Marion Roynon Elementary School

2715 E St.
San Dimas, CA 91773

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Top 20%

Tel: (909) 971-8207

ro.bonita.k12.ca.us

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SAVE SCHOOL

Serving 842 students in grades Kindergarten-5, J. Marion Roynon Elementary School ranks in the top 20% of all schools in California for overall test scores (math proficiency is top 20%, and reading proficiency is top 20%).

The percentage of students achieving is 61% (which is higher than the California state average of 34%). The percentage of students achieving is 62% (which is higher than the California state average of 47%).

The student-teacher ratio of 25:1 is higher than the California state level of 21:1.

Minority enrollment is 84% of the student body (majority Hispanic), which is higher than the California state average of 80% (majority Hispanic).

Quick Facts (26-27)

Grades: Kindergarten-5
Enrollment: 842 students
Student-Teacher Ratio: 25:1
Minority Enrollment: 84%
: Top 20% in CA
: 61% (Top 20%)
: 62% (Top 30%)
: 40-44% (Top 30%)
: J. Marion Roynon Elementary serves the southeast part of San Dimas, CA, covering an area of approximately 2.2 square miles. Most students live within a 5-10 minute drive from the school, with the furthest edge of the attendance zone located about 1.5 miles away.
Source: National Center for Education Statistics (NCES), CA Dept. of Education

Top Rankings

J. Marion Roynon Elementary School ranks among the top 20% of public schools in California for:

School Overview

J. Marion Roynon Elementary School's student population of 842 students has grown by 25% over five school years.

The teacher population of 34 teachers has grown by 13% over five school years.

Grades Offered

Grades Kindergarten-5

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Distribution of Students By Grade Trends
Grade	J. Marion Roynon Elementary School
Kind	208
1	120
2	122
3	130
4	125
5	137

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Total Students

842 students

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Showing 2015–2025. Full 39-year historical data available below ↓

Total Students Trends (1987-2025)
Year	J. Marion Roynon Elementary School
2025	842
2024	804
2023	841
2022	693
2021	671
2020	719
2019	716
2018	724
2017	741
2015	743
2014	743
2013	751
2012	761
2011	771
2010	727
2009	708
2008	591
2007	720
2006	737
2005	701
2004	707
2003	736
2002	759
2001	828
2000	829
1999	827
1998	797
1997	784
1996	786
1995	802
1994	777
1993	797
1992	791
1991	1,013
1990	1,000
1989	984
1988	947
1987	886

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Total Classroom Teachers

34 teachers

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Showing 2014–2025. Full 39-year historical data available below ↓

Total Classroom Teachers Trends (1987-2025)
Year	J. Marion Roynon Elementary School
2025	34
2024	33
2023	34
2022	30
2021	30
2019	29
2018	30
2017	30
2015	29
2014	29
2013	27
2012	30
2010	31
2009	33
2008	37
2007	34
2006	35
2005	34
2004	32
2003	35
2002	37
2001	40
2000	38
1999	36
1998	36
1997	39
1996	25
1995	30
1994	30
1993	28
1992	37
1991	37
1990	37
1989	38
1988	36
1987	35

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School Calendar

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School Rankings

J. Marion Roynon Elementary School ranks within the top 20% of all 9,523 schools in California (based off of combined math and reading proficiency testing data).

The of J. Marion Roynon Elementary School is 0.58, 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)

#1497 out of 9523 schools
(Top 20%)

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Showing 2011–2023. Full 14-year historical data available below ↓

Overall School Rank Trends (2010-2023)
Year	J. Marion Roynon Elementary School
2023	#1497
2022	#1656
2019	#1546
2018	#1300
2017	#1733
2016	#2226
2015	#3017
2013	#1731
2012	#1553
2011	#1571
2010	#1829

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61%

34%

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Showing 2011–2023. Full 14-year historical data available below ↓

Math Proficiency Comparison (2010-2023)
Year	J. Marion Roynon Elementary School	California	Bonita Unified School District
2023	61%	34%	58%
2022	55%	33%	53%
2019	61%	40%	59%
2018	58%	39%	56%
2017	53%	38%	54%
2016	48%	37%	48%
2015	39%	34%	45%
2013	78%	59%	76%
2012	77%	59%	74%
2011	79%	58%	71%
2010	75%	56%	66%

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62%

47%

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Reading and Language Arts Proficiency Comparison (2010-2022)
Year	J. Marion Roynon Elementary School	California	Bonita Unified School District
2022	62%	47%	68%
2019	68%	51%	70%
2018	72%	50%	56%
2017	66%	48%	67%
2016	61%	48%	62%
2015	47%	44%	57%
2013	67%	57%	73%
2012	72%	58%	73%
2011	68%	56%	71%
2010	64%	54%	68%

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40-44%

29%

Student-Teacher Ratio

25:1

21:1

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Showing 2014–2025. Full 39-year historical data available below ↓

Student-Teacher Ratio Comparison (1987-2025)
Year	J. Marion Roynon Elementary School	California	Bonita Unified School District
2025	25:1	21:1
2024	24:1	22:1
2023	25:1	22:1	23:1
2022	23:1	22:1	23:1
2021	22:1	22:1	24:1
2019	25:1	23:1	24:1
2018	24:1	23:1	25:1
2017	25:1	23:1	25:1
2015	26:1	24:1	25:1
2014	26:1	24:1	25:1
2013	28:1	24:1	26:1
2012	25:1	23:1	25:1
2010	23:1	21:1	24:1
2009	21:1	20:1	23:1
2008	16:1	18:1	17:1
2007	21:1	21:1	24:1
2006	21:1	20:1	24:1
2005	21:1	21:1	23:1
2004	22:1	21:1	24:1
2003	21:1	20:1	24:1
2002	21:1	20:1	24:1
2001	21:1	20:1	23:1
2000	22:1	21:1	24:1
1999	23:1	21:1	24:1
1998	22:1	21:1	24:1
1997	20:1	23:1	24:1
1996	31:1	25:1	30:1
1995	27:1	25:1	27:1
1994	26:1	25:1	28:1
1993	28:1	25:1	27:1
1992	21:1	24:1	26:1
1991	27:1	24:1	26:1
1990	27:1	24:1	26:1
1989	26:1	24:1	26:1
1988	26:1	24:1	27:1
1987	25:1	24:1	25:1

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Asian

11%

12%

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Showing 2015–2025. Full 38-year historical data available below ↓

Asian Student Percentage Comparison (1988-2025)
Year	J. Marion Roynon Elementary School	California	Bonita Unified School District
2025	11%	12%
2024	10%	12%
2023	9%	12%	11%
2022	7%	12%	9%
2021	7%	12%	9%
2020	7%	12%	9%
2019	6%	12%	9%
2018	5%	12%	8%
2017	5%	11%	8%
2015	3%	11%	7%
2014	2%	11%	7%
2013	2%	11%	7%
2012	2%	11%	7%
2011	3%	11%	7%
2010	3%	11%	7%
2009	3%	11%	7%
2008	3%	12%	8%
2007	5%	12%	8%
2006	4%	12%	9%
2005	3%	12%	7%
2004	4%	12%	7%
2003	3%	12%	8%
2002	4%	11%	8%
2001	4%	11%	8%
2000	6%	11%	8%
1999	6%	11%	8%
1998	5%	11%	8%
1997	5%	11%	8%
1996	4%	11%	8%
1995	4%	11%	10%
1994	4%	11%	9%
1993	4%	11%	9%
1992	4%	11%	9%
1991	5%	11%	8%
1990	4%	10%	8%
1989	5%	10%	8%
1988	4%	10%	8%

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Hispanic

62%

56%

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Showing 2015–2025. Full 38-year historical data available below ↓

Hispanic Student Percentage Comparison (1988-2025)
Year	J. Marion Roynon Elementary School	California	Bonita Unified School District
2025	62%	56%
2024	63%	56%
2023	63%	55%	57%
2022	64%	56%	56%
2021	64%	56%	55%
2020	65%	55%	53%
2019	69%	55%	53%
2018	68%	54%	51%
2017	69%	54%	51%
2015	67%	54%	51%
2014	64%	53%	49%
2013	62%	53%	47%
2012	62%	52%	47%
2011	58%	51%	45%
2010	54%	50%	44%
2009	45%	49%	30%
2008	53%	50%	37%
2007	43%	49%	32%
2006	43%	48%	31%
2005	37%	47%	31%
2004	39%	46%	30%
2003	42%	45%	32%
2002	41%	44%	31%
2001	40%	43%	30%
2000	37%	42%	29%
1999	36%	41%	28%
1998	35%	40%	28%
1997	32%	40%	26%
1996	33%	39%	26%
1995	31%	38%	24%
1994	30%	37%	23%
1993	30%	36%	22%
1992	28%	35%	21%
1991	24%	34%	21%
1990	24%	33%	20%
1989	24%	31%	19%
1988	24%	30%	18%

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Black

View Data

Showing 2015–2025. Full 38-year historical data available below ↓

Black Student Percentage Comparison (1988-2025)
Year	J. Marion Roynon Elementary School	California	Bonita Unified School District
2025	3%	5%
2024	2%	5%
2023	3%	5%	2%
2022	3%	5%	2%
2021	2%	5%	2%
2020	2%	5%	3%
2019	2%	5%	3%
2018	3%	5%	3%
2017	3%	6%	3%
2015	4%	6%	3%
2014	5%	6%	3%
2013	5%	6%	4%
2012	4%	6%	3%
2011	5%	7%	3%
2010	4%	7%	3%
2009	3%	7%	3%
2008	4%	8%	4%
2007	7%	8%	6%
2006	6%	8%	7%
2005	6%	8%	6%
2004	6%	8%	7%
2003	5%	8%	5%
2002	4%	9%	5%
2001	4%	9%	4%
2000	4%	9%	5%
1999	5%	9%	5%
1998	4%	9%	5%
1997	5%	9%	5%
1996	6%	9%	5%
1995	6%	9%	5%
1994	5%	9%	5%
1993	5%	9%	5%
1992	4%	9%	5%
1991	4%	8%	5%
1990	4%	9%	5%
1989	4%	9%	5%
1988	3%	9%	4%

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White

16%

20%

View Data

Showing 2015–2025. Full 38-year historical data available below ↓

White Student Percentage Comparison (1988-2025)
Year	J. Marion Roynon Elementary School	California	Bonita Unified School District
2025	16%	20%
2024	18%	20%
2023	19%	21%	22%
2022	19%	21%	23%
2021	20%	22%	24%
2020	19%	22%	27%
2019	17%	23%	27%
2018	18%	23%	30%
2017	18%	24%	30%
2015	21%	25%	32%
2014	24%	25%	34%
2013	25%	25%	35%
2012	25%	26%	36%
2011	26%	27%	37%
2010	29%	27%	38%
2009	31%	28%	39%
2008	40%	29%	51%
2007	38%	30%	45%
2006	41%	31%	46%
2005	46%	32%	48%
2004	47%	33%	50%
2003	49%	34%	53%
2002	50%	35%	55%
2001	51%	36%	56%
2000	52%	37%	57%
1999	53%	38%	57%
1998	55%	39%	58%
1997	58%	39%	60%
1996	57%	40%	60%
1995	59%	41%	61%
1994	60%	42%	63%
1993	60%	43%	64%
1992	63%	44%	65%
1991	67%	46%	66%
1990	68%	47%	67%
1989	67%	49%	68%
1988	69%	50%	70%

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Two or more races

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Showing 2015–2025. Full 17-year historical data available below ↓

Two or More Races Student Percentage Comparison (2009-2025)
Year	J. Marion Roynon Elementary School	California	Bonita Unified School District
2025	8%	6%
2024	7%	6%
2023	6%	6%	8%
2022	7%	5%	10%
2021	7%	5%	10%
2020	7%	5%	8%
2019	6%	4%	8%
2018	6%	4%	8%
2017	5%	4%	8%
2015	4%	3%	7%
2014	5%	3%	7%
2013	6%	3%	7%
2012	7%	3%	7%
2011	8%	3%	8%
2010	10%	3%	8%
2009	18%	3%	21%

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All Ethnic Groups

84%

80%

0.58

0.63

View Data

Showing 2015–2025. Full 38-year historical data available below ↓

Diversity Score Comparison (1988-2025)
Year	J. Marion Roynon Elementary School	California	Bonita Unified School District
2025	0.58	0.63
2024	0.56	0.63
2023	0.56	0.64	0.62
2022	0.55	0.63	0.62
2021	0.55	0.62	0.63
2020	0.54	0.64	0.64
2019	0.49	0.63	0.64
2018	0.50	0.64	0.64
2017	0.49	0.64	0.64
2015	0.51	0.64	0.63
2014	0.53	0.65	0.64
2013	0.55	0.65	0.65
2012	0.55	0.65	0.65
2011	0.59	0.66	0.65
2010	0.62	0.67	0.65
2009	0.67	0.67	0.71
2008	0.56	0.65	0.60
2007	0.60	0.66	0.57
2006	0.58	0.66	0.57
2005	0.56	0.66	0.56
2004	0.58	0.67	0.56
2003	0.59	0.67	0.61
2002	0.58	0.67	0.60
2001	0.58	0.67	0.59
2000	0.59	0.67	0.59
1999	0.59	0.67	0.59
1998	0.58	0.67	0.58
1997	0.56	0.67	0.57
1996	0.57	0.67	0.56
1995	0.56	0.67	0.56
1994	0.55	0.67	0.55
1993	0.55	0.67	0.53
1992	0.53	0.67	0.52
1991	0.49	0.66	0.52
1990	0.48	0.66	0.51
1989	0.49	0.65	0.49
1988	0.47	0.65	0.47

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(22-23)

26.7%

27.7%

View Data

Chronic Absenteeism Rate (2021-2023)
Year	J. Marion Roynon Elementary School	California	Bonita Unified School District
2023	26.7%	27.7%	21.3%
2022	22.8%	33%	25.8%
2021	3.9%	15.4%	5.5%

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Eligible for

41%

54%

View Data

Showing 2015–2025. Full 34-year historical data available below ↓

Free Lunch Eligibility Comparison (1992-2025)
Year	J. Marion Roynon Elementary School	California	Bonita Unified School District
2025	41%	54%
2024	43%	54%
2023	41%	51%	32%
2022	39%	51%	30%
2021	43%	53%	31%
2020	42%	52%	32%
2019	46%	52%	32%
2018	51%	53%	26%
2017	43%	49%	26%
2015	48%	50%	27%
2014	46%	49%	25%
2013	44%	48%	24%
2011	42%	46%	23%
2010	33%	46%	18%
2009	26%	43%	14%
2008	36%	41%	19%
2007	31%	40%	17%
2006	35%	40%	17%
2005	31%	40%	17%
2004	30%	40%	16%
2003	36%	39%	19%
2002	30%	39%	18%
2001	31%	39%	17%
2000	33%	40%	18%
1999	34%	40%	19%
1998	45%	47%	24%
1997	45%	47%	26%
1996	47%	46%	26%
1995	43%	45%	25%
1994	45%	43%	25%
1993	41%	41%	22%
1992	41%	38%	20%

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Eligible for

View Data

Showing 2015–2025. Full 27-year historical data available below ↓

Reduced-Price Lunch Eligibility Comparison (1999-2025)
Year	J. Marion Roynon Elementary School	California	Bonita Unified School District
2025	2%	8%
2024	2%	8%
2023	3%	8%	2%
2022	7%	7%	6%
2021	6%	6%	5%
2020	7%	7%	7%
2019	7%	7%	7%
2018	6%	7%	7%
2017	11%	9%	7%
2015	11%	9%	8%
2014	11%	9%	7%
2013	12%	7%	7%
2011	10%	8%	6%
2010	10%	9%	7%
2009	11%	10%	6%
2008	14%	10%	8%
2007	12%	10%	7%
2006	9%	9%	6%
2005	9%	9%	6%
2004	11%	9%	6%
2003	10%	9%	6%
2002	9%	8%	5%
2001	9%	8%	5%
2000	10%	7%	5%
1999	9%	7%	5%

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School Statewide Testing

View Education Department Test Scores

School District Name

Bonita Unified School District

Sports

Colors

Blue and White

School Mascot

Raccoon

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

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Frequently Asked Questions

What is J. Marion Roynon Elementary School's ranking?

J. Marion Roynon Elementary School is ranked #1497 out of 9,523 schools, which ranks it among the top 20% of public schools in California.

What schools are J. Marion Roynon Elementary School often compared to?

J. Marion Roynon Elementary Schoolis often viewed alongside schools like Oak Mesa Elementary School, Grace Miller Elementary School by visitors of our site.

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

61% of students have achieved math proficiency (compared to the 34% CA state average), while 62% of students have achieved reading proficiency (compared to the 47% CA state average).

How many students attend J. Marion Roynon Elementary School?

842 students attend J. Marion Roynon Elementary School.

What is the racial composition of the student body?

62% of J. Marion Roynon Elementary School students are Hispanic, 16% of students are White, 11% of students are Asian, 8% of students are Two or more races, and 3% of students are Black.

What is the student-teacher ratio of J. Marion Roynon Elementary School?

J. Marion Roynon Elementary School has a student ration of 25:1, which is higher than the California state average of 21:1.

What grades does J. Marion Roynon Elementary School offer ?

J. Marion Roynon Elementary School offers enrollment in grades Kindergarten-5

What school district is J. Marion Roynon Elementary School part of?

J. Marion Roynon Elementary School is part of Bonita Unified School District.

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Quick Facts (26-27)

Grades: Kindergarten-5
Enrollment: 842 students
Student-Teacher Ratio: 25:1
Minority Enrollment: 84%
: Top 20%
: 61% (Top 20%)
: 62% (Top 30%)
: 40-44% (Top 30%)
: J. Marion Roynon Elementary serves the southeast part of San Dimas, CA, covering an area of approximately 2.2 square miles. Most students live within a 5-10 minute drive from the school, with the furthest edge of the attendance zone located about 1.5 miles away.
Source: National Center for Education Statistics (NCES), CA Dept. of Education

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Seeking entry for grade:

Target start date:

Please briefly describe academic, athletic, and extracurricular interests of the student:

Home address:

City:

Country:

State:

Zip: (enter "N/A" if not applicable)

Phone:

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