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River Delta Joint Unified School District

Item: River Delta Joint Unified School District
Rating: 4
Author: Public School Review

445 Montezuma St.
Rio Vista, CA 94571-1651

( shown in map)

Bottom 50%

Tel: (707) 374-1700

www.rdusd.org

For the 2026 school year, there are 11 public schools serving 1,705 students in River Delta Joint Unified School District. This district's average is 4/10, which is in the bottom 50% of public schools in California.

Public Schools in River Delta Joint Unified School District have an score of 20% (versus the California public school average of 34%), and score of 41% (versus the 47% statewide average).

Minority enrollment is 72% of the student body (majority Hispanic), which is less than the California public school average of 80% (majority Hispanic).

Overview

This School District

This State (CA)

# Schools

11 Schools

10,347 Schools

# Students

1,705 Students

5,790,405 Students

# Teachers

94 Teachers

267,593 Teachers

Student-Teacher Ratio

18:1

Student By Grade

View Data

Comparison of Students By Grade Trends
Grade	River Delta Joint Unified School District	California
Kind	169	264
1	115	187
2	92	196
3	125	204
4	107	205
5	110	209
6	115	210
7	129	213
8	152	216
9	123	231
10	156	225
11	142	226
12	170	235

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District Rank

River Delta Joint Unified School District, which is ranked #1243 of all 1,904 school districts in California (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.

The school district's graduation rate of 95% has increased from 90-94% over five school years.

This School District

State Average (CA)

#1196 out of 1932 school districts
(Bottom 50%)

View Data

Overall School District Rank Trends
Year	River Delta Joint Unified School District
2023	#1196
2022	#1205
2019	#1157
2018	#587
2017	#591
2016	#664
2015	#589
2014	#377
2013	#499
2012	#529
2011	#416

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20%

34%

View Data

Math Proficiency Trends
Year	River Delta Joint Unified School District	California
2023	20%	34%
2022	21%	33%
2019	31%	40%
2018	30%	39%
2017	32%	38%
2016	26%	37%
2015	26%	34%
2014	57%	63%
2013	58%	59%
2012	57%	59%
2011	61%	58%

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40%

47%

View Data

Reading and Language Arts Proficiency Trends
Year	River Delta Joint Unified School District	California
2022	40%	47%
2019	42%	51%
2018	30%	50%
2017	41%	48%
2016	37%	48%
2015	37%	44%
2014	52%	58%
2013	54%	57%
2012	55%	58%
2011	56%	56%
2010	48%	54%

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25%

29%

View Data

Science Proficiency Trends
Year	River Delta Joint Unified School District	California
2022	25%	29%
2021	20%	28%

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(21-22)

≥95%

87%

View Data

Graduation Rate Trends
Year	River Delta Joint Unified School District	California
2022	95%	87%
2021	92%	84%
2020	95%	85%
2019	87%	84%
2018	87%	84%
2017	92%	83%
2016	92%	83%
2015	92%	89%
2014	82%	88%
2013	87%	87%
2012	92%	86%

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Students by Ethnicity:

0.57

0.63

View Data

Comparison of Diversity Score Trends
Year	River Delta Joint Unified School District	California
2024	0.57	0.63
2023	0.58	0.64
2022	0.58	0.63
2021	0.58	0.62
2020	0.57	0.63
2019	0.57	0.63
2018	0.56	0.64
2017	0.56	0.64
2016	0.57	0.64
2015	0.54	0.64
2014	0.57	0.65
2013	0.57	0.65
2012	0.57	0.65
2011	0.58	0.67
2010	0.57	0.67
2009	0.58	0.71
2008	0.55	0.65
2007	0.56	0.67
2006	0.55	0.66
2005	0.56	0.67
2004	0.56	0.67
2003	0.55	0.67
2002	0.54	0.67
2001	0.54	0.67
2000	0.53	0.67
1999	0.54	0.67
1998	0.53	0.67
1997	0.52	0.67
1996	0.53	0.67
1995	0.52	0.67
1994	0.52	0.67
1993	0.50	0.67
1992	0.52	0.67
1991	0.52	0.67
1990	0.52	0.66
1989	0.49	0.65
1988	0.49	0.65

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% American Indian

View Data

American Indian Student Percentage Comparison Over Years (1994-2024)
Year	River Delta Joint Unified School District	California
2024	1%	1%
2023	1%	1%
2022	1%	1%
2020	1%	1%
2019	1%	1%
2013	2%	1%
2012	1%	1%
2011	1%	1%
2010	1%	1%
2007	1%	2%
2005	2%	2%
2004	2%	2%
2002	1%	2%
2001	2%	2%
2000	2%	1%
1999	1%	1%
1997	1%	1%
1995	1%	1%
1994	1%	1%

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% Asian

12%

View Data

Asian Student Percentage Comparison Over Years (1988-2024)
Year	River Delta Joint Unified School District	California
2024	2%	12%
2023	2%	12%
2022	2%	12%
2021	3%	12%
2020	2%	12%
2019	2%	12%
2018	1%	11%
2017	1%	11%
2016	2%	11%
2015	3%	11%
2014	2%	11%
2013	1%	11%
2012	2%	11%
2011	2%	11%
2010	2%	11%
2009	2%	11%
2008	2%	12%
2007	3%	12%
2006	2%	12%
2005	3%	12%
2004	3%	12%
2003	5%	11%
2002	4%	11%
2001	3%	11%
2000	3%	11%
1999	4%	11%
1998	4%	11%
1997	3%	11%
1996	3%	11%
1995	3%	11%
1994	3%	11%
1993	4%	11%
1992	3%	11%
1991	5%	11%
1990	5%	10%
1989	4%	10%
1988	5%	10%

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% Hispanic

60%

56%

View Data

Hispanic Student Percentage Comparison Over Years (1988-2024)
Year	River Delta Joint Unified School District	California
2024	59%	56%
2023	57%	55%
2022	57%	56%
2021	56%	56%
2020	55%	55%
2019	55%	55%
2018	54%	54%
2017	54%	54%
2016	52%	54%
2015	43%	54%
2014	51%	53%
2013	50%	53%
2012	48%	52%
2011	48%	51%
2010	47%	50%
2009	45%	49%
2008	46%	50%
2007	44%	49%
2006	44%	48%
2005	42%	47%
2004	41%	46%
2003	41%	45%
2002	40%	44%
2001	39%	43%
2000	38%	42%
1999	38%	41%
1998	37%	40%
1997	35%	40%
1996	34%	39%
1995	35%	38%
1994	34%	37%
1993	32%	36%
1992	35%	35%
1991	33%	34%
1990	33%	33%
1989	30%	31%
1988	29%	30%

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% Black

View Data

Black Student Percentage Comparison Over Years (1991-2024)
Year	River Delta Joint Unified School District	California
2024	2%	5%
2023	3%	5%
2022	3%	5%
2021	3%	5%
2020	2%	5%
2019	2%	5%
2018	1%	6%
2017	1%	6%
2016	1%	6%
2015	3%	6%
2014	1%	6%
2013	1%	6%
2012	1%	6%
2011	2%	7%
2010	1%	7%
2009	1%	7%
2008	2%	8%
2007	2%	8%
2006	1%	8%
2005	2%	8%
2004	2%	8%
2003	1%	8%
2001	1%	8%
2000	1%	9%
1999	1%	9%
1998	1%	9%
1997	1%	9%
1996	3%	9%
1995	1%	9%
1994	2%	9%
1993	1%	9%
1992	1%	9%
1991	1%	9%

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% White

27%

20%

View Data

White Student Percentage Comparison Over Years (1988-2024)
Year	River Delta Joint Unified School District	California
2024	29%	20%
2023	30%	21%
2022	31%	21%
2021	33%	22%
2020	36%	23%
2019	36%	23%
2018	39%	24%
2017	39%	24%
2016	40%	24%
2015	37%	24%
2014	42%	25%
2013	43%	25%
2012	46%	26%
2011	44%	27%
2010	47%	27%
2009	47%	28%
2008	50%	29%
2007	50%	29%
2006	53%	31%
2005	51%	31%
2004	52%	32%
2003	53%	34%
2002	55%	35%
2001	55%	36%
2000	56%	37%
1999	56%	38%
1998	58%	39%
1997	60%	39%
1996	60%	40%
1995	60%	41%
1994	60%	42%
1993	63%	43%
1992	60%	44%
1991	61%	45%
1990	61%	47%
1989	65%	49%
1988	65%	50%

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% Hawaiian

n/a

% Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2010-2024)
Year	River Delta Joint Unified School District	California
2024	6%	6%
2023	6%	6%
2022	6%	5%
2021	5%	5%
2020	4%	4%
2019	4%	4%
2018	5%	4%
2017	5%	4%
2016	5%	4%
2015	7%	3%
2014	4%	3%
2013	3%	3%
2012	2%	3%
2011	3%	2%
2010	2%	3%

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All Ethnic Groups

District Revenue and Spending

The revenue/student of $17,578 in this school district is less than the state median of $20,100. The school district revenue/student has grown by 22% over four school years.

The school district's spending/student of $15,279 is less than the state median of $18,511. The school district spending/student has grown by 13% over four school years.

This School District

This State (CA)

Total Revenue

$30 MM

$116,387 MM

View Data

Total Revenues Trends
Year	River Delta Joint Unified School District	California
2023	$30 MM	$8 MM
2022	$28 MM	$7 MM
2021	$30 MM	$8 MM
2020	$28 MM	$7 MM
2019	$32 MM	$7 MM
2018	$29 MM	$29 MM
2017	$28 MM	$26 MM
2016	$28 MM	$24 MM
2015	$25 MM	$17 MM
2014	$24 MM	$21 MM
2012	$24 MM	$19 MM
2011	$26 MM	$19 MM
2010	$25 MM	$17 MM
2009	$25 MM	$19 MM
2008	$25 MM	$19 MM
2007	$27 MM	$19 MM
2006	$22 MM	$17 MM
2005	$21 MM	$16 MM
2004	$18 MM	$16 MM
2003	$21 MM	$16 MM
2002	$19 MM	$15 MM
2001	$18 MM	$15 MM
2000	$16 MM	$13 MM
1999	$15 MM	$12 MM
1998	$14 MM	$11 MM
1997	$14 MM	$10 MM
1996	$12 MM	$9 MM
1995	$12 MM	$8 MM

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Spending

$26 MM

$107,188 MM

View Data

Total Expenditure Trends
Year	River Delta Joint Unified School District	California
2023	$26 MM	$7 MM
2022	$27 MM	$7 MM
2021	$26 MM	$7 MM
2020	$27 MM	$7 MM
2019	$27 MM	$7 MM
2018	$24 MM	$29 MM
2017	$26 MM	$24 MM
2016	$23 MM	$23 MM
2015	$25 MM	$18 MM
2014	$21 MM	$21 MM
2012	$25 MM	$19 MM
2011	$27 MM	$19 MM
2010	$25 MM	$18 MM
2009	$31 MM	$18 MM
2008	$36 MM	$19 MM
2007	$28 MM	$18 MM
2006	$21 MM	$17 MM
2005	$20 MM	$16 MM
2004	$21 MM	$17 MM
2003	$20 MM	$15 MM
2002	$18 MM	$16 MM
2001	$17 MM	$14 MM
2000	$16 MM	$13 MM
1999	$14 MM	$11 MM
1998	$15 MM	$11 MM
1997	$13 MM	$10 MM
1996	$12 MM	$8 MM
1995	$12 MM	$8 MM

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Revenue / Student

$17,578

$20,100

View Data

Average Revenue Per Student Trends
Year	River Delta Joint Unified School District	California
2023	$16,809	$15,607
2022	$14,297	$14,213
2021	$16,027	$15,669
2020	$14,297	$14,213
2019	$16,244	$14,063
2018	$12,676	$16,033
2017	$12,098	$16,692
2016	$11,864	$15,604
2015	$10,527	$10,238
2014	$10,371	$11,786
2012	$10,486	$11,929
2011	$16,276	$11,681
2010	$11,655	$10,238
2009	$11,186	$11,099
2008	$11,457	$11,762
2007	$12,033	$11,879
2006	$9,463	$10,859
2005	$8,330	$10,445
2004	$7,363	$10,566
2003	$8,258	$10,456
2002	$7,743	$9,803
2001	$7,509	$10,568
2000	$6,833	$8,943
1999	$6,214	$8,203
1998	$5,866	$7,395
1997	$5,662	$6,922
1995	$4,867	$5,953
1992	$4,494	$5,430

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Spending / Student

$15,279

$18,511

View Data

Average Expenditure Per Student Trends
Year	River Delta Joint Unified School District	California
2023	$14,611	$13,914
2022	$13,465	$13,602
2021	$13,931	$13,970
2020	$13,465	$13,602
2019	$13,981	$13,522
2018	$10,568	$16,124
2017	$10,877	$15,588
2016	$9,583	$14,779
2015	$10,500	$10,739
2014	$9,211	$11,804
2012	$10,675	$12,155
2011	$16,761	$11,509
2010	$11,625	$10,739
2009	$14,141	$10,975
2008	$16,456	$11,678
2007	$12,831	$11,317
2006	$8,767	$10,926
2005	$8,119	$10,789
2004	$8,571	$11,073
2003	$8,165	$10,210
2002	$7,452	$10,600
2001	$7,051	$10,007
2000	$6,610	$9,131
1999	$5,889	$7,911
1998	$6,239	$7,592
1997	$5,351	$6,759
1995	$4,985	$6,033
1992	$4,357	$5,588

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Frequently Asked Questions

How many schools belong to River Delta Joint Unified School District?

River Delta Joint Unified School District manages 11 public schools serving 1,705 students.

What is the rank of River Delta Joint Unified School District?

River Delta Joint Unified School District is ranked #1243 out of 1,904 school districts in California (bottom 50%) based off of combined math and reading proficiency testing data for the 2022-2023 school year.

What is the racial composition of students in River Delta Joint Unified School District?

60% of River Delta Joint Unified School District students are Hispanic, 27% of students are White, 7% of students are Two or more races, 3% of students are Black, 1% of students are American Indian, 1% of students are Asian, and 1% of students are Hawaiian.

What is the student/teacher ratio of River Delta Joint Unified School District?

River Delta Joint Unified School District has a student/teacher ratio of 18:1, which is lower than the California state average of 22:1.

What is River Delta Joint Unified School District's spending/student ratio?

The school district's spending/student of $15,279 is less than the state median of $18,511. The school district spending/student has grown by 13% over four school years.

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Quick Facts (2026)

District size: 11 schools
Grades: K-12
Enrollment: 1,705 students
Student-Teacher Ratio: 18:1
Minority Enrollment: 72%
: ≥95% (Btm 50% in CA)
: Bottom 50%
: 20% (Btm 50%)
: 40% (Btm 50%)
: 25% (Btm 50%)
Source: National Center for Education Statistics (NCES), CA Dept. of Education