Isleton Elementary School (Ranked Top 50% for 2025)

412 Union St.
Isleton, CA 95641

( shown in map)

Top 50%

Serving 181 students in grades Kindergarten-6, Isleton Elementary School ranks in the top 50% of all schools in California for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).

The percentage of students achieving is 40-44% (which is higher than the California state average of 34%). The percentage of students achieving is 45-49% (which is approximately equal to 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 72% of the student body (majority Hispanic), which is lower than the California state average of 80% (majority Hispanic).

Quick Facts (2025)

Grades: Kindergarten-6
Enrollment: 181 students
Student-Teacher Ratio: 23:1
Minority Enrollment: 72%
: Top 50% in CA
: 40-44% (Top 50%)
: 45-49% (Top 50%)
: 40-59% (Top 20%)
Source: National Center for Education Statistics (NCES), CA Dept. of Education

Top Rankings

Isleton Elementary School ranks among the top 20% of public schools in California for:

School Overview

Isleton Elementary School's student population of 181 students has grown by 14% over five school years.

The teacher population of 8 teachers has grown by 14% over five school years.

Grades Offered

Grades Kindergarten-6

View Data

Distribution of Students By Grade Trends
Grade	Isleton Elementary School
Kind	40
1	24
2	21
3	22
4	21
5	29
6	24

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Total Students

181 students

View Data

Total Students Trends Over Years (1987-2023)
Year	Isleton Elementary School
2023	175
2022	155
2021	153
2020	158
2019	158
2018	177
2017	177
2016	156
2015	165
2014	168
2013	162
2012	150
2011	122
2010	160
2009	159
2008	153
2007	185
2006	201
2005	229
2004	259
2003	259
2002	241
2001	241
2000	239
1999	232
1998	242
1997	259
1996	249
1995	257
1994	282
1993	280
1992	305
1991	297
1990	286
1989	281
1988	256
1987	232

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Gender %

Total Classroom Teachers

8 teachers

View Data

Total Classroom Teachers Trends Over Years (1990-2023)
Year	Isleton Elementary School
2023	9
2022	7
2021	8
2020	7
2019	7
2018	9
2017	9
2016	9
2015	9
2014	9
2013	10
2012	8
2010	10
2009	12
2008	12
2007	13
2006	12
2005	14
2004	14
2003	13
2002	12
2001	12
2000	12
1999	14
1998	14
1997	14
1996	13
1995	13
1994	14
1993	13
1992	13
1991	13
1990	13

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School Rankings

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

The of Isleton Elementary School is 0.49, 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)

#3301 out of 9523 schools
(Top 50%)

View Data

Overall School Rank Trends Over Years (2010-2023)
Year	Isleton Elementary School
2023	#3301
2022	#3610
2019	#1499
2018	#1562
2017	#1931
2016	#2410
2015	#3839
2013	#1636
2012	#1608
2011	#2715
2010	#4699

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40-44%

34%

View Data

Math Proficiency Comparison Over Years (2010-2023)
Year	Isleton Elementary School	California	River Delta Joint Unified School District
2023	42%	34%	20%
2022	37%	33%	21%
2019	62%	40%	31%
2018	57%	39%	30%
2017	52%	38%	32%
2016	47%	37%	26%
2015	32%	34%	26%
2013	87%	59%	58%
2012	82%	59%	57%
2011	67%	58%	61%
2010	62%	56%	49%

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45-49%

47%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2010-2022)
Year	Isleton Elementary School	California	River Delta Joint Unified School District
2022	47%	47%	40%
2019	67%	51%	42%
2018	67%	50%	30%
2017	62%	48%	41%
2016	57%	48%	37%
2015	42%	44%	37%
2013	62%	57%	54%
2012	67%	58%	55%
2011	62%	56%	56%
2010	42%	54%	48%

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40-59%

29%

Student-Teacher Ratio

23:1

21:1

View Data

Student-Teacher Ratio Comparison Over Years (1990-2023)
Year	Isleton Elementary School	California	River Delta Joint Unified School District
2023	19:1	22:1	20:1
2022	22:1	21:1	19:1
2021	19:1	22:1	18:1
2020	23:1	23:1	22:1
2019	23:1	23:1	22:1
2018	20:1	23:1	24:1
2017	20:1	23:1	24:1
2016	17:1	24:1	23:1
2015	18:1	24:1	23:1
2014	19:1	24:1	21:1
2013	16:1	24:1	19:1
2012	19:1	23:1	19:1
2010	16:1	21:1	17:1
2009	13:1	20:1	18:1
2008	13:1	18:1	15:1
2007	14:1	21:1	18:1
2006	17:1	20:1	18:1
2005	16:1	21:1	20:1
2004	19:1	21:1	20:1
2003	20:1	20:1	21:1
2002	20:1	20:1	20:1
2001	20:1	20:1	20:1
2000	20:1	21:1	20:1
1999	17:1	21:1	20:1
1998	17:1	21:1	19:1
1997	19:1	23:1	20:1
1996	19:1	25:1	22:1
1995	20:1	25:1	21:1
1994	20:1	25:1	21:1
1993	22:1	25:1	23:1
1992	23:1	24:1	22:1
1991	23:1	24:1	22:1
1990	22:1	24:1	23:1

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American Indian

n/a

View Data

American Indian Student Percentage Comparison Over Years (1996-2023)
Year	Isleton Elementary School	California	River Delta Joint Unified School District
2023	1%	1%	1%
2022	1%	1%	1%
2020	1%	1%	1%
2019	1%	1%	1%
2015	1%	1%
2014	1%	1%
2013	1%	1%	2%
2010	1%	1%	1%
2009	1%	1%
2008	1%	1%
2007	3%	2%	1%
2006	3%	1%
2005	3%	2%	2%
2004	2%	2%	2%
2003	2%	2%
2002	2%	2%	1%
2001	2%	2%	2%
2000	1%	1%	2%
1999	1%	1%	1%
1998	1%	1%
1996	1%	1%

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Asian

n/a

12%

View Data

Asian Student Percentage Comparison Over Years (1989-2023)
Year	Isleton Elementary School	California	River Delta Joint Unified School District
2023	1%	12%	2%
2022	1%	12%	2%
2021	1%	12%	3%
2020	1%	12%	2%
2019	1%	12%	2%
2016	1%	11%	2%
2014	1%	11%	2%
2013	1%	11%	1%
2011	3%	11%	2%
2010	1%	11%	2%
2009	1%	11%	2%
2008	1%	12%	2%
2007	3%	12%	3%
2006	5%	12%	2%
2005	5%	12%	3%
2004	4%	12%	3%
2003	6%	11%	5%
2002	10%	11%	4%
2001	5%	11%	3%
2000	6%	11%	3%
1999	6%	11%	4%
1998	7%	11%	4%
1997	3%	11%	3%
1996	6%	11%	3%
1995	4%	11%	3%
1994	5%	11%	3%
1993	4%	11%	4%
1992	2%	11%	3%
1991	4%	11%	5%
1990	5%	10%	5%
1989	4%	10%	4%

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Hispanic

66%

56%

View Data

Hispanic Student Percentage Comparison Over Years (1991-2023)
Year	Isleton Elementary School	California	River Delta Joint Unified School District
2023	61%	55%	57%
2022	63%	56%	57%
2021	63%	56%	56%
2020	61%	55%	55%
2019	61%	55%	55%
2018	57%	54%	54%
2017	57%	54%	54%
2016	62%	54%	52%
2015	60%	54%	43%
2014	68%	53%	51%
2013	69%	53%	50%
2012	68%	52%	48%
2011	67%	51%	48%
2010	69%	50%	47%
2009	61%	49%	45%
2008	61%	50%	46%
2007	54%	49%	44%
2006	54%	48%	44%
2005	50%	47%	42%
2004	44%	46%	41%
2003	43%	45%	41%
2002	42%	44%	40%
2001	42%	43%	39%
2000	34%	42%	38%
1999	35%	41%	38%
1998	34%	40%	37%
1997	31%	40%	35%
1996	30%	39%	34%
1995	31%	38%	35%
1994	33%	37%	34%
1993	30%	36%	32%
1992	31%	35%	35%
1991	31%	34%	33%

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Black

View Data

Black Student Percentage Comparison Over Years (1991-2023)
Year	Isleton Elementary School	California	River Delta Joint Unified School District
2023	1%	5%	3%
2022	1%	5%	3%
2021	1%	5%	3%
2011	1%	7%	2%
2008	1%	8%	2%
2007	1%	8%	2%
2006	3%	8%	1%
2005	3%	8%	2%
2004	3%	8%	2%
2003	1%	8%	1%
2001	4%	8%	1%
2000	3%	9%	1%
1999	3%	9%	1%
1998	2%	9%	1%
1997	2%	9%	1%
1996	3%	9%	3%
1995	2%	9%	1%
1994	3%	9%	2%
1993	4%	9%	1%
1992	4%	9%	1%
1991	3%	9%	1%

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White

28%

20%

View Data

White Student Percentage Comparison Over Years (1991-2023)
Year	Isleton Elementary School	California	River Delta Joint Unified School District
2023	31%	21%	30%
2022	29%	21%	31%
2021	30%	22%	33%
2020	34%	23%	36%
2019	34%	23%	36%
2018	39%	24%	39%
2017	39%	24%	39%
2016	33%	24%	40%
2015	37%	24%	37%
2014	28%	25%	42%
2013	27%	25%	43%
2012	29%	26%	46%
2011	25%	27%	44%
2010	29%	27%	47%
2009	30%	28%	47%
2008	35%	29%	50%
2007	39%	29%	50%
2006	35%	31%	53%
2005	37%	31%	51%
2004	47%	32%	52%
2003	48%	34%	53%
2002	46%	35%	55%
2001	47%	36%	55%
2000	56%	37%	56%
1999	55%	38%	56%
1998	56%	39%	58%
1997	64%	39%	60%
1996	60%	40%	60%
1995	61%	41%	60%
1994	58%	42%	60%
1993	62%	43%	63%
1992	63%	44%	60%
1991	62%	45%	61%

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Hawaiian

n/a

Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2011-2023)
Year	Isleton Elementary School	California	River Delta Joint Unified School District
2023	5%	6%	6%
2022	4%	5%	6%
2021	4%	5%	5%
2020	3%	4%	4%
2019	3%	4%	4%
2018	4%	4%	5%
2017	4%	4%	5%
2016	4%	4%	5%
2015	2%	3%	7%
2014	2%	3%	4%
2013	2%	3%	3%
2012	3%	3%	2%
2011	3%	2%	3%

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All Ethnic Groups

0.49

0.63

View Data

Diversity Score Comparison Over Years (1991-2023)
Year	Isleton Elementary School	California	River Delta Joint Unified School District
2023	0.53	0.64	0.58
2022	0.52	0.63	0.58
2021	0.52	0.62	0.58
2020	0.52	0.63	0.57
2019	0.52	0.63	0.57
2018	0.53	0.64	0.56
2017	0.53	0.64	0.56
2016	0.51	0.64	0.57
2015	0.51	0.64	0.54
2014	0.47	0.65	0.57
2013	0.46	0.65	0.57
2012	0.46	0.65	0.57
2011	0.49	0.67	0.58
2010	0.45	0.67	0.57
2009	0.54	0.71	0.58
2008	0.51	0.65	0.55
2007	0.56	0.67	0.56
2006	0.60	0.66	0.55
2005	0.64	0.67	0.56
2004	0.60	0.67	0.56
2003	0.59	0.67	0.55
2002	0.62	0.67	0.54
2001	0.60	0.67	0.54
2000	0.57	0.67	0.53
1999	0.58	0.67	0.54
1998	0.57	0.67	0.53
1997	0.50	0.67	0.52
1996	0.55	0.67	0.53
1995	0.53	0.67	0.52
1994	0.56	0.67	0.52
1993	0.53	0.67	0.50
1992	0.51	0.67	0.52
1991	0.52	0.67	0.52

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Eligible for

62%

54%

View Data

Free Lunch Eligibility Comparison Over Years (1994-2023)
Year	Isleton Elementary School	California	River Delta Joint Unified School District
2023	53%	51%	51%
2022	46%	51%	50%
2021	41%	53%	49%
2020	59%	52%	53%
2019	59%	52%	53%
2018	56%	49%	42%
2017	56%	49%	42%
2016	62%	50%	45%
2015	55%	50%	41%
2014	63%	49%	39%
2013	70%	48%	43%
2011	84%	46%	61%
2010	49%	46%	42%
2009	65%	43%	41%
2008	69%	41%	38%
2007	57%	40%	37%
2005	50%	40%	31%
2004	38%	40%	31%
2003	60%	39%	32%
2002	47%	39%	32%
2001	45%	39%	33%
2000	41%	40%	31%
1999	47%	40%	34%
1998	54%	47%	38%
1997	56%	47%	38%
1996	39%	46%	36%
1995	40%	45%	35%
1994	51%	43%	37%

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Eligible for

18%

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2001-2023)
Year	Isleton Elementary School	California	River Delta Joint Unified School District
2023	7%	8%	7%
2022	2%	7%	2%
2021	4%	6%	4%
2020	8%	7%	6%
2019	8%	7%	6%
2018	9%	9%	6%
2017	9%	9%	6%
2016	12%	9%	7%
2015	12%	9%	6%
2014	19%	9%	10%
2013	14%	7%	7%
2011	14%	8%	10%
2010	6%	9%	6%
2009	11%	10%	5%
2008	12%	10%	7%
2007	14%	10%	6%
2005	13%	9%	5%
2004	10%	9%	5%
2003	4%	9%	5%
2002	8%	8%	5%
2001	5%	8%	6%

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School Statewide Testing

School District Name

River Delta Joint Unified School District

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

Profile last updated: 02/09/2025

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Frequently Asked Questions

What is Isleton Elementary School's ranking?

Isleton Elementary School is ranked #3301 out of 9,523 schools, which ranks it among the top 50% of public schools in California.

What schools are Isleton Elementary School often compared to?

Isleton Elementary Schoolis often viewed alongside schools like Oakley Elementary School, Ellerth E. Larson Elementary School by visitors of our site.

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

40-44% of students have achieved math proficiency (compared to the 34% CA state average), while 45-49% of students have achieved reading proficiency (compared to the 47% CA state average).

How many students attend Isleton Elementary School?

181 students attend Isleton Elementary School.

What is the racial composition of the student body?

66% of Isleton Elementary School students are Hispanic, 28% of students are White, 3% of students are Two or more races, 2% of students are Black, and 1% of students are Hawaiian.

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

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

What grades does Isleton Elementary School offer ?

Isleton Elementary School offers enrollment in grades Kindergarten-6

What school district is Isleton Elementary School part of?

Isleton Elementary School is part of River Delta Joint Unified School District.

School Reviews

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Quick Facts (2025)

Top Rankings

School Overview

Distribution of Students By Grade Trends

Total Students Trends Over Years (1987-2023)

Total Classroom Teachers Trends Over Years (1990-2023)

School Rankings

Overall School Rank Trends Over Years (2010-2023)

Math Proficiency Comparison Over Years (2010-2023)

Reading and Language Arts Proficiency Comparison Over Years (2010-2022)

Student-Teacher Ratio Comparison Over Years (1990-2023)

American Indian Student Percentage Comparison Over Years (1996-2023)

Asian Student Percentage Comparison Over Years (1989-2023)

Hispanic Student Percentage Comparison Over Years (1991-2023)

Black Student Percentage Comparison Over Years (1991-2023)

White Student Percentage Comparison Over Years (1991-2023)

Two or More Races Student Percentage Comparison Over Years (2011-2023)

Diversity Score Comparison Over Years (1991-2023)

Free Lunch Eligibility Comparison Over Years (1994-2023)

Reduced-Price Lunch Eligibility Comparison Over Years (2001-2023)

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