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Isleton Elementary

Q: Is Isleton Elementary a good school?

Isleton Elementary ranks 1458 th of 5857 California elementary schools. SchoolDigger rates this school 4 stars out of 5.

Public Grades K-6

1458^th

SchoolDigger Rank ?

of 5,857 California Elementary Schools

Better than 75% of California elementary schools

Summary

Isleton Elementary is a public K-6 school serving 188 students in the rural community of Isleton, part of the River Delta Joint Unified School District, and it stands out as a high-performing school that excels despite serving a community with significant economic need.

The school consistently outperforms both its district and the state of California in core subjects like English, math, and science, and it is the clear leader within its own district, outscoring peers like Bates Elementary and Walnut Grove Elementary by wide margins. A key to its success is an exceptionally low rate of chronic student absences, which is less than half the district average, ensuring students are present and ready to learn. Furthermore, Isleton achieves these strong results efficiently, spending less per student than several nearby schools while getting better academic outcomes.

Isleton Elementary has shown impressive recovery since the pandemic, with test scores and attendance improving faster than state trends. The school also performs very well compared to schools in other nearby districts, such as Knightsen Elementary and those in the Oakley Union Elementary district, even when they have lower poverty rates. While the school is a notable success, parents may want to note that math scores dip in 6th grade and that class sizes have been increasing in recent years.

188

Students ?

23.5

Student/teacher ratio ?

$17,106

Per pupil spending ?

79.3%

Free/discounted lunch ?

412 Union St.
Isleton, CA 95641-0728

(916) 777-6515

District: River Delta Joint Unified

Students who attend Isleton Elementary usually attend:

Middle:	Riverview Middle
High:	Rio Vista High

Racial breakdown:

Hispanic:

64.4%

White:

29.8%

Two or more races:

3.7%

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Compare Isleton Elementary to nearby elementary schools!

At a glance

▬ Ranking trend: Holding steady — 76th percentile in 2013 → 75th in 2025

Strengths

✓Test scores above the California average (56% vs 41% meeting standards)

✓Ranks in the top 25% of California elementary schools

✓Among the top-ranked schools in River Delta Joint Unified

Worth a look

!Large classes — about 24 students per teacher

Students meeting standards (2024-2025) ?

This school56%

District avg26%

California avg41%

1,458^th of 5,857

California public elementary schools ?

Top 25%▲ up 17 pts since 2015

From top 42% (2015) to top 25% (2025)

See the entire ranking list of California Elementary Schools →

★★★★★

SchoolDigger rating ?

1^st of 4Elementary Schools in the River Delta Joint Unified

1025^th of 1,543River Delta Joint Unified among California districts

Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	California percentile	Rating
2025	73.3	1458 of 5857	75.1%	★★★★☆
2024	67.8	1691 of 5869	71.2%	★★★★☆
2023	63.7	1854 of 5859	68.4%	★★★☆☆
2022	57.5	2150 of 5883	63.5%	★★★☆☆
2019	76.6	1318 of 5789	77.2%	★★★★☆
2018	74.5	1377 of 5662	75.7%	★★★★☆
2017	74.2	1379 of 5692	75.8%	★★★★☆
2016	67.0	1663 of 5614	70.4%	★★★★☆
2015	51.7	2357 of 5611	58.0%	★★★☆☆
2013	74.5	1349 of 5530	75.6%	★★★★☆
2012	73.9	1334 of 5390	75.3%	★★★★☆
2011	65.5	1715 of 5377	68.1%	★★★☆☆
2010	42.7	3003 of 5314	43.5%	★★☆☆☆
2009	49.5	2518 of 5193	51.5%	★★★☆☆
2008	25.4	3941 of 5113	22.9%	★☆☆☆☆
2007	20.1	4286 of 5113	16.2%	★☆☆☆☆
2006	15.1	4351 of 4818	9.7%	☆☆☆☆☆
2005	42.6	2570 of 4822	46.7%	★★☆☆☆
2004	19.8	3944 of 4809	18.0%	★☆☆☆☆

Female

Year	Avg score	Statewide rank	California percentile	Rating
2025	62.1	1861 of 5597	66.8%	★★★☆☆
2024	65.8	1669 of 5612	70.3%	★★★★☆
2023	49.3	2449 of 5609	56.3%	★★★☆☆
2022	65.8	1701 of 5635	69.8%	★★★☆☆
2018	93.0	364 of 5413	93.3%	★★★★★

Hispanic

Year	Avg score	Statewide rank	California percentile	Rating
2025	72.8	1070 of 5107	79.0%	★★★★☆
2024	76.1	894 of 5107	82.5%	★★★★☆
2023	69.4	1205 of 5087	76.3%	★★★★☆
2022	59.2	1675 of 5084	67.1%	★★★☆☆
2019	79.9	712 of 4963	85.7%	★★★★☆
2018	75.0	904 of 4830	81.3%	★★★★☆

Low Socio Economic Status

Year	Avg score	Statewide rank	California percentile	Rating
2025	78.3	848 of 5460	84.5%	★★★★☆
2024	76.4	998 of 5517	81.9%	★★★★☆
2023	68.7	1283 of 5363	76.1%	★★★★☆
2022	74.4	987 of 5264	81.3%	★★★★☆
2019	84.0	537 of 5173	89.6%	★★★★☆
2018	78.4	753 of 5084	85.2%	★★★★☆

Male

Year	Avg score	Statewide rank	California percentile	Rating
2025	72.6	1404 of 5628	75.1%	★★★★☆
2024	64.7	1761 of 5643	68.8%	★★★☆☆
2023	70.0	1509 of 5638	73.2%	★★★★☆
2022	48.8	2510 of 5663	55.7%	★★★☆☆
2019	72.7	1398 of 5510	74.6%	★★★★☆
2018	71.5	1419 of 5431	73.9%	★★★★☆

How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)

Low Socio Economic Status (2025)84th percentile+9 vs school

Hispanic (2025)79th percentile+4 vs school

Male (2025)75th percentile~ school

Female (2025)67th percentile-8 vs school

By subject vs California (2024-2025) ?

English Language Arts/Literacy61%+12 vs state

Science57%+24 vs state

Mathematics50%+13 vs state

★

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Schools Near Isleton Elementary

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Immunizations Finance All

School													Students/Teachers											Ranking (2025)				Ranking (2024)				CSA Spanish Overall (2025)			CSA Spanish Listening (2025)			CSA Spanish Writing (2025)			CSA Spanish Reading (2025)			CAST Science (2025)			Smarter Balanced Assessments English Language Arts/Literacy (2025)							Smarter Balanced Assessments Mathematics (2025)							% Completely Immunized (2022)	% Hepatitis B (2022)	% Varicella (2022)	% MMR (2022)	Per Pupil Expenditures (2024)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	SchoolDigger Rating (2025)	Average Standard Score (2024)	Statewide Rank (2024)	State Percentile (2024)	Rank Change from Previous Year	CSA Spanish Overall 3rd Grade	CSA Spanish Overall 6th Grade	CSA Spanish Overall All Grades	CSA Spanish Listening 3rd Grade	CSA Spanish Listening 6th Grade	CSA Spanish Listening All Grades	CSA Spanish Writing 3rd Grade	CSA Spanish Writing 6th Grade	CSA Spanish Writing All Grades	CSA Spanish Reading 3rd Grade	CSA Spanish Reading 6th Grade	CSA Spanish Reading All Grades	CAST Science 5th Grade	CAST Science 8th Grade	CAST Science All Grades	Smarter Balanced Assessments English Language Arts/Literacy 3rd Grade	Smarter Balanced Assessments English Language Arts/Literacy 4th Grade	Smarter Balanced Assessments English Language Arts/Literacy 5th Grade	Smarter Balanced Assessments English Language Arts/Literacy 6th Grade	Smarter Balanced Assessments English Language Arts/Literacy 7th Grade	Smarter Balanced Assessments English Language Arts/Literacy 8th Grade	Smarter Balanced Assessments English Language Arts/Literacy All Grades	Smarter Balanced Assessments Mathematics 3rd Grade	Smarter Balanced Assessments Mathematics 4th Grade	Smarter Balanced Assessments Mathematics 5th Grade	Smarter Balanced Assessments Mathematics 6th Grade	Smarter Balanced Assessments Mathematics 7th Grade	Smarter Balanced Assessments Mathematics 8th Grade	Smarter Balanced Assessments Mathematics All Grades	% Completely Immunized KG	% Hepatitis B KG	% Varicella KG	% MMR KG	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Isleton Elementary	Public	K-6	412 Union St.	Isleton	95641	Sacramento County	River Delta Joint Unified	No	(n/a)	No	(n/a)	(916) 777-6515	188	8	23.5	79.3%	56 (29.8%)	1 (0.5%)	121 (64.4%)	2 (1.1%)	0 (0.0%)	1 (0.5%)	7 (3.7%)	73.3	1458^th of 5857 public elementary schools	75.1%		67.8	1691^st of 5869 public elementary schools	71.2%	233													56.5		56.5	60.9	68.4	65.2	53.3			61.1	60.9	55.0	69.6	23.3			50.0					$17,106	$2,565	$14,541
D. H. White Elementary	Public	K-6	500 Elm Way	Rio Vista	94571	Solano County	River Delta Joint Unified	No	(n/a)	No	(n/a)	(707) 374-5335	432	20	21.6	76.9%	149 (34.5%)	18 (4.2%)	195 (45.1%)	6 (1.4%)	5 (1.2%)	8 (1.9%)	51 (11.8%)	20.7	4766^th of 5857 public elementary schools	18.6%		17.2	5093^rd of 5869 public elementary schools	13.2%	327													13.0		13.0	27.9	22.6	18.5	34.0			25.8	29.1	15.1	7.4	38.3			22.8					$13,414	$1,921	$11,493
Walnut Grove Elementary	Public	K-6	14181 Grove St.	Walnut Grove	95690	Sacramento County	River Delta Joint Unified	No	(n/a)	No	(n/a)	(916) 776-1844	131	8	16.3	93.1%	13 (9.9%)	4 (3.1%)	108 (82.4%)	2 (1.5%)	0 (0.0%)	0 (0.0%)	4 (3.1%)	27.3	4191^st of 5857 public elementary schools	28.4%		16.9	5127^th of 5869 public elementary schools	12.6%	936													11.1		11.1	53.3	23.5	22.2	33.3			32.4	53.3	11.8	22.2	16.7			25.0					$18,731	$2,405	$16,326
New Hope Elementary	Public	K-8	26675 North Sacramento Blvd.	Thornton	95686	San Joaquin County	New Hope Elementary	No	(n/a)	No	(n/a)	(209) 794-2376	164	9	18.9	78.0%	9 (5.5%)	2 (1.2%)	148 (90.2%)	1 (0.6%)	0 (0.0%)	0 (0.0%)	4 (2.4%)	16	5182^nd of 5857 public elementary schools	11.5%		23.9	4481^st of 5869 public elementary schools	23.6%	701													5.9	8.3	7.3	7.7	27.8	35.3	30.0	50.0	62.5	38.4	23.1	22.2	0.0	15.0	25.0	25.0	18.8	85.7		85.7	85.7	$23,491	$8,635	$14,856
Bates Elementary	Public	K-6	180 Primasing Ave.	Courtland	95615	Sacramento County	River Delta Joint Unified	No	(n/a)	No	(n/a)	(916) 775-1771	82	4	20.5	93.9%	1 (1.2%)	0 (0.0%)	78 (95.1%)	1 (1.2%)	0 (0.0%)	2 (2.4%)	0 (0.0%)	56	2252^nd of 5857 public elementary schools	61.6%		32.2	3757^th of 5869 public elementary schools	36.0%	1505	0.0	12.5	6.7	0.0	18.8	13.3	0.0	12.5	8.9	0.0	12.5	6.7				18.2			75.0			44.4	9.1			56.3			31.1					$20,194	$2,000	$18,194
Summer Lake Elementary	Public	K-5	4320 East Summer Lake Dr.	Oakley	94561	Contra Costa County	Oakley Union Elementary	No	(n/a)	No	(n/a)	(925) 625-6730	595	25	23.8	43.9%	132 (22.2%)	71 (11.9%)	229 (38.5%)	98 (16.5%)	3 (0.5%)	2 (0.3%)	60 (10.1%)	38.1	3339^th of 5857 public elementary schools	43.0%		42.6	3031^st of 5869 public elementary schools	48.4%	308													26.4		26.4	36.6	48.4	36.8				40.8	35.4	33.0	26.7				31.7					$14,067	$1,210	$12,857
Vintage Parkway Elementary	Public	K-5	1000 Vintage Pkwy.	Oakley	94561	Contra Costa County	Oakley Union Elementary	No	(n/a)	No	(n/a)	(925) 625-6800	481	20	24.0	44.3%	123 (25.6%)	25 (5.2%)	274 (57.0%)	19 (4.0%)	3 (0.6%)	4 (0.8%)	33 (6.9%)	39.1	3279^th of 5857 public elementary schools	44.0%		51.3	2495^th of 5869 public elementary schools	57.5%	784													27.6		27.6	31.5	45.5	52.6				43.4	35.6	28.6	25.0				29.7	93.2	97.3	97.3		$13,630	$1,409	$12,221
Iron House Elementary	Public	K-5	4801 Frank Hengel Way	Oakley	94561	Contra Costa County	Oakley Union Elementary	No	(n/a)	No	(n/a)	(925) 625-6825	503	21	24.5	44.9%	88 (17.5%)	92 (18.3%)	183 (36.4%)	91 (18.1%)	0 (0.0%)	3 (0.6%)	46 (9.1%)	29.4	4012^th of 5857 public elementary schools	31.5%		31	3859^th of 5869 public elementary schools	34.2%	153													23.5		23.5	35.2	22.7	42.7				34.3	35.2	18.5	23.8				26.7					$14,573	$1,019	$13,554
Oakley Elementary	Public	K-5	501 Norcross Ln.	Oakley	94561	Contra Costa County	Oakley Union Elementary	No	(n/a)	No	(n/a)	(925) 625-7050	379	18	21.0	54.4%	74 (19.5%)	10 (2.6%)	241 (63.6%)	26 (6.9%)	1 (0.3%)	2 (0.5%)	25 (6.6%)	19.1	4913^th of 5857 public elementary schools	16.1%		17.5	5069^th of 5869 public elementary schools	13.6%	156													24.5		24.5	17.7	30.9	27.5				24.7	20.6	23.6	15.4				20.0					$18,044	$1,093	$16,951
Orchard Park	Public	K-8	5150 Live Oak Ave.	Oakley	94561	Contra Costa County	Antioch Unified	No	(n/a)	No	(n/a)	(925) 779-7445	751	30	24.6	72.6%	130 (17.3%)	120 (16.0%)	372 (49.5%)	64 (8.5%)	2 (0.3%)	7 (0.9%)	56 (7.5%)	26.3	4294^th of 5857 public elementary schools	26.7%		22.9	4593^rd of 5869 public elementary schools	21.7%	299													18.1	45.7	32.6	26.8	34.2	44.6	29.4	54.4	57.0	41.7	23.9	25.3	16.9	26.7	22.5	21.5	22.8					$16,702	$2,185	$14,517

Frequently Asked Questions about Isleton Elementary

What schools do graduates of Isleton Elementary attend?

Students who attend Isleton Elementary usually go on to attend:

Middle : Riverview Middle
High : Rio Vista High

Is Isleton Elementary a good school?

Isleton Elementary ranks 1458^th of 5857 California elementary schools. SchoolDigger rates this school 4 stars out of 5.

What is the racial makeup of Isleton Elementary?

Students at Isleton Elementary are 64% Hispanic, 30% White, 4% Two or more races, 1% Asian.

How many students attend Isleton Elementary?

In the 2024-25 school year, 188 students attended Isleton Elementary.

What district is Isleton Elementary in?

River Delta Joint Unified

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SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the California Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.