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Cobblestone Elementary

Q: Is Cobblestone Elementary a good school?

Cobblestone Elementary ranks 2380 th of 5817 California elementary schools. SchoolDigger rates this school 3 stars out of 5.

Public Grades K-5

2380^th

SchoolDigger Rank ?

of 5,817 California Elementary Schools

Better than 59% of California elementary schools

Summary

Cobblestone Elementary serves 590 students in grades K–5 in Plumas Lake, in the Plumas Lake Elementary district. In 2025–26, 48% of students met proficiency in English language arts (ELA), 43% in math, and 33% in science. The clearest takeaway is that math is the school’s strongest subject: its 43% proficiency rate was above both the state and district.

Compared with nearby schools, Cobblestone ranked second in all-grade math, at 43%, behind Marcum-Illinois Union Elementary; Cobblestone also outperformed the nearby-school average of 31%. ELA proficiency was 48%—just below the state’s 49%, but above the district’s 43% and the nearby average of 39%; Cobblestone ranked third among nearby schools. Science was its weakest subject relative to the state: 33%, compared with 36% statewide. Still, that was above the district’s 29% and ranked third among nearby schools with results. Grade-level results add an important contrast: grade 3 math was 58%, 11 points above the state, while grade 5 math was 29%, 8 points below it. Nearby schools serve different grade ranges, so all-grade comparisons are not perfectly like-for-like.

Results have declined overall since 2022–23: ELA fell 2 points to 48%, math fell 4 points to 43%, and science ended 1 point lower at 33%. SchoolDigger gives Cobblestone 3 stars and a 59th-percentile statewide rank for 2025–26, down from the 76th percentile in 2021–22, though it remains near the top of the nearby group. Its student-teacher ratio was 22.2 in 2024–25. That year, 44% of students were free/reduced lunch eligible, below the nearby average of 62%; this is context, not an explanation for results. SchoolDigger’s statewide effectiveness ranking for Asian Students was at the 14th percentile in 2025–26, far below the school’s overall 59th percentile. Its ranking for Hispanic Students fell from the 72nd percentile in 2024–25 to the 51st in 2025–26, while the overall ranking changed from the 60th to the 59th percentile.

590

Students ?

22.2

Student/teacher ratio ?

$16,643

Per pupil spending ?

44.4%

Free/reduced lunch eligible (2024-25) ?

All students in California receive free school meals.

≥ 99%

Kindergartners with all required immunizations (2024-25)

1718 Churchill Way
Plumas Lake, CA 95961-9144

(530) 634-9723

District: Plumas Lake Elementary

Students who attend Cobblestone Elementary usually attend:

Middle:	Riverside Meadows Intermediate
High:	Wheatland Union High

Racial breakdown:

Hispanic:

36.1%

White:

30.5%

Asian:

15.8%

See top rated California elementary schools

Compare Cobblestone Elementary to nearby elementary schools!

At a glance

▼ Ranking trend: Declining — 75th percentile in 2015 → 59th in 2026

Strengths

✓Above the California median (59th percentile)

Worth a look

!Ranking has slipped — down 16 percentile points since 2015

!Some student groups rank well below the school's overall statewide standing

!Large classes — about 22 students per teacher

Students meeting standards (2025-2026) ?

This school44%

District avg37%

California avg42%

2,380^th of 5,817

California public elementary schools ?

Top 41%▼ down 15 pts since 2016

From top 26% (2016) to top 41% (2026)

See the entire ranking list of California Elementary Schools →

★★★★★

SchoolDigger rating ?

1^st of 2Elementary Schools in the Plumas Lake Elementary

758^th of 1,530Plumas Lake Elementary 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
2026	54.0	2380 of 5817	59.1%	★★★☆☆
2025	53.9	2369 of 5857	59.6%	★★★☆☆
2024	60.6	2042 of 5869	65.2%	★★★☆☆
2023	62.6	1912 of 5859	67.4%	★★★☆☆
2022	75.3	1391 of 5883	76.4%	★★★★☆
2019	64.7	1853 of 5789	68.0%	★★★☆☆
2018	66.3	1747 of 5662	69.1%	★★★☆☆
2017	57.7	2138 of 5692	62.4%	★★★☆☆
2016	71.6	1460 of 5614	74.0%	★★★★☆
2015	72.1	1412 of 5611	74.8%	★★★★☆
2013	81.8	967 of 5530	82.5%	★★★★☆
2012	59.8	2059 of 5390	61.8%	★★★☆☆
2011	57.4	2174 of 5377	59.6%	★★★☆☆
2010	40.1	3166 of 5314	40.4%	★★☆☆☆

Asian

Year	Avg score	Statewide rank	California percentile	Rating
2026	16.2	1037 of 1210	14.3%	★☆☆☆☆
2025	6.8	1116 of 1203	7.2%	☆☆☆☆☆

Female

Year	Avg score	Statewide rank	California percentile	Rating
2026	47.3	2679 of 5581	52.0%	★★★☆☆
2025	50.5	2434 of 5597	56.5%	★★★☆☆
2024	59.4	1986 of 5612	64.6%	★★★☆☆
2023	63.3	1795 of 5609	68.0%	★★★☆☆
2022	73.6	1372 of 5635	75.7%	★★★★☆
2019	62.9	1850 of 5492	66.3%	★★★☆☆
2018	52.4	2351 of 5413	56.6%	★★★☆☆

Hispanic

Year	Avg score	Statewide rank	California percentile	Rating
2026	47.8	2475 of 5094	51.4%	★★★☆☆
2025	64.8	1453 of 5107	71.5%	★★★★☆
2024	66.1	1354 of 5107	73.5%	★★★★☆
2023	74.5	981 of 5087	80.7%	★★★★☆
2022	80.8	708 of 5084	86.1%	★★★★☆
2019	79.1	742 of 4963	85.0%	★★★★☆
2018	64.2	1435 of 4830	70.3%	★★★★☆

Low Socio Economic Status

Year	Avg score	Statewide rank	California percentile	Rating
2026	53.4	2279 of 5423	58.0%	★★★☆☆
2025	51.0	2368 of 5460	56.6%	★★★☆☆
2024	58.4	1898 of 5517	65.6%	★★★☆☆
2023	51.2	2287 of 5363	57.4%	★★★☆☆
2022	77.8	832 of 5264	84.2%	★★★★☆
2019	74.5	951 of 5173	81.6%	★★★★☆
2018	67.5	1327 of 5084	73.9%	★★★★☆

Male

Year	Avg score	Statewide rank	California percentile	Rating
2026	59.5	2012 of 5603	64.1%	★★★☆☆
2025	55.9	2185 of 5628	61.2%	★★★☆☆
2024	59.6	2000 of 5643	64.6%	★★★☆☆
2023	59.1	1991 of 5638	64.7%	★★★☆☆
2022	73.8	1353 of 5663	76.1%	★★★★☆
2019	64.0	1772 of 5510	67.8%	★★★☆☆
2018	77.2	1166 of 5431	78.5%	★★★★☆

Multi-racial

Year	Avg score	Statewide rank	California percentile	Rating
2025	9.6	660 of 718	8.1%	☆☆☆☆☆
2024	34.0	497 of 670	25.8%	★☆☆☆☆
2023	15.3	597 of 669	10.8%	★☆☆☆☆

Special Education

Year	Avg score	Statewide rank	California percentile	Rating
2026	45.7	1255 of 2927	57.1%	★★★☆☆
2025	44.9	1250 of 2847	56.1%	★★★☆☆

White

Year	Avg score	Statewide rank	California percentile	Rating
2026	36.7	1709 of 2536	32.6%	★★☆☆☆
2025	39.4	1710 of 2598	34.2%	★★☆☆☆
2024	36.8	1788 of 2651	32.6%	★★☆☆☆
2023	43.0	1636 of 2661	38.5%	★★☆☆☆
2022	53.4	1357 of 2726	50.2%	★★★☆☆
2019	29.9	2155 of 2834	24.0%	★☆☆☆☆
2018	39.8	1826 of 2737	33.3%	★★☆☆☆

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)

Male (2026)64th percentile+5 vs school

Low Socio Economic Status (2026)58th percentile~ school

Special Education (2026)57th percentile~ school

Female (2026)52nd percentile-7 vs school

Hispanic (2026)51st percentile-8 vs school

White (2026)33rd percentile-26 vs school

Asian (2026)14th percentile-45 vs school

Multi-racial (2025)8th percentile-51 vs school

By subject vs California (2025-2026) ?

English Language Arts/Literacy48%~ state avg

Mathematics43%+5 vs state

Science33%-3 vs state

★

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Schools Near Cobblestone Elementary

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Ranking:

E Elementary M Middle H High A Alternative P Private

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

School													Students/Teachers											Ranking (2026)				Ranking (2025)				CAST Science (2026)			Smarter Balanced Assessments English Language Arts/Literacy (2026)							Smarter Balanced Assessments Mathematics (2026)							Vaccination (2024-25)		Per Pupil Expenditures (2025)
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/reduced lunch (2024-25)	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2026)	Statewide Rank (2026)	State Percentile (2026)	SchoolDigger Rating (2026)	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	Rank Change from Previous Year	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	Vaccination: Kindergartners with all required immunizations	Vaccination: Exemption rate	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Cobblestone Elementary	Public	K-5	1718 Churchill Way	Plumas Lake	95961	Yuba County	Plumas Lake Elementary	No	(n/a)	No	(n/a)	(530) 634-9723	590	27	22.2	44.4%	180 (30.5%)	33 (5.6%)	213 (36.1%)	93 (15.8%)	2 (0.3%)	6 (1.0%)	63 (10.7%)	54	2380^th of 5817 public elementary schools	59.1%		53.9	2369^th of 5857 public elementary schools	59.6%	11	33.3		33.3	52.6	47.7	44.4				48.4	57.7	41.9	28.9				43.2	≥ 99%		$16,643	$16,148	$495
Rio Del Oro Elementary	Public	K-5	1220 Zanes Dr.	Plumas Lake	95961	Yuba County	Plumas Lake Elementary	No	(n/a)	No	(n/a)	(530) 749-0690	564	26	21.6	43.6%	207 (36.7%)	21 (3.7%)	195 (34.6%)	57 (10.1%)	1 (0.2%)	5 (0.9%)	78 (13.8%)	44.1	2981^st of 5817 public elementary schools	48.8%		63.1	1916^th of 5857 public elementary schools	67.3%	1065	34.3		34.3	39.5	40.7	43.4				41.1	39.8	35.2	38.4				38.0	96%	0%	$18,970	$18,372	$598
Arboga Elementary	Public	K-8	1686 Broadway	Olivehurst	95961	Yuba County	Marysville Joint Unified	No	(n/a)	No	(n/a)	(530) 741-6101	746	34	22.1	65.7%	230 (30.8%)	15 (2.0%)	357 (47.9%)	67 (9.0%)	14 (1.9%)	7 (0.9%)	56 (7.5%)	44.2	2975^th of 5817 public elementary schools	48.9%		35.9	3499^th of 5857 public elementary schools	40.3%	524	35.1	25.9	30.4	49.4	36.3	44.2	42.1	37.3	54.3	44.0	43.5	41.3	32.9	22.1	17.6	22.2	29.9	97%	0%	$17,287	$15,902	$1,385
Browns Elementary	Public	K-8	1248 Pacific Ave.	Rio Oso	95674	Sutter County	Browns Elementary	No	(n/a)	No	(n/a)	(530) 633-2523	143	10	14.3	29.4%	82 (57.3%)	1 (0.7%)	42 (29.4%)	7 (4.9%)	0 (0.0%)	4 (2.8%)	7 (4.9%)	45.7	2868^th of 5817 public elementary schools	50.7%		40.3	3195^th of 5857 public elementary schools	45.4%	327	26.7		24.0	53.9	57.1	53.3	37.5	53.3		49.4	38.5	42.9	26.7	18.8	40.0		32.5	≥ 95%		$28,056	$27,380	$676
Olivehurst Elementary	Public	K-6	1778 McGowan Pkwy.	Olivehurst	95961	Yuba County	Marysville Joint Unified	No	(n/a)	No	(n/a)	(530) 741-6191	489	20	24.4	72.6%	96 (19.6%)	8 (1.6%)	317 (64.8%)	46 (9.4%)	3 (0.6%)	0 (0.0%)	19 (3.9%)	21.1	4716^th of 5817 public elementary schools	18.9%		18	5014^th of 5857 public elementary schools	14.4%	298	9.2		9.2	31.9	18.5	23.4	47.4			29.5	34.3	12.5	7.9	29.3			20.5	≥ 98%		$17,823	$16,294	$1,529
Johnson Park Elementary	Public	K-6	4364 Lever Ave.	Olivehurst	95961	Yuba County	Marysville Joint Unified	No	(n/a)	No	(n/a)	(530) 743-6133	456	19	24.0	80.7%	93 (20.4%)	22 (4.8%)	252 (55.3%)	44 (9.6%)	2 (0.4%)	6 (1.3%)	35 (7.7%)	23.5	4522^nd of 5817 public elementary schools	22.3%		22.1	4671^st of 5857 public elementary schools	20.2%	149	22.4		22.4	27.7	28.8	35.8	27.8			30.3	34.0	19.7	22.4	20.4			23.5	≥ 98%		$18,769	$17,186	$1,583
Marcum-Illinois Union Elementary	Public	K-8	2452 El Centro Blvd.	East Nicolaus	95659	Sutter County	Marcum-Illinois Union Elementary	No	(n/a)	No	(n/a)	(530) 656-2407	179	10	17.9	29.6%	113 (63.1%)	0 (0.0%)	49 (27.4%)	3 (1.7%)	0 (0.0%)	2 (1.1%)	12 (6.7%)	68.2	1678^th of 5817 public elementary schools	71.2%		84	963^rd of 5857 public elementary schools	83.6%	715	42.9	52.4	47.6	47.6	68.8	42.9	52.6	77.8	50.0	55.7	61.9	75.0	38.1	52.6	72.2	40.0	55.7	≥ 95%		$35,984	$35,210	$774
Ella Elementary	Public	K-6	4850 Olivehurst Ave.	Olivehurst	95961	Yuba County	Marysville Joint Unified	No	(n/a)	No	(n/a)	(530) 741-6124	554	21	26.3	81.9%	123 (22.2%)	1 (0.2%)	352 (63.5%)	34 (6.1%)	8 (1.4%)	3 (0.5%)	32 (5.8%)	20.8	4743^rd of 5817 public elementary schools	18.5%		18.6	4952^nd of 5857 public elementary schools	15.5%	209	6.0		6.0	26.3	30.1	19.1	36.4			27.7	35.0	20.6	13.3	28.2			24.2	≥ 98%		$17,908	$16,326	$1,582
Wheatland Elementary	Public	K-3	111 Hooper St.	Wheatland	95692	Yuba County	Wheatland	No	(n/a)	No	(n/a)	(530) 633-3140	380	19	19.5	65.8%	217 (57.1%)	1 (0.3%)	112 (29.5%)	4 (1.1%)	2 (0.5%)	0 (0.0%)	44 (11.6%)								(n/a)				41.7						41.7	39.3						39.3	98%	0%	$27,632	$26,612	$1,020
Riverbend Elementary	Public	K-8	301 Stewart Rd.	Yuba City	95991	Sutter County	Yuba City Unified	No	(n/a)	No	(n/a)	(530) 822-3100	914	47	19.5	76.3%	217 (23.7%)	14 (1.5%)	411 (45.0%)	194 (21.2%)	5 (0.5%)	3 (0.3%)	70 (7.7%)	33.5	3706^th of 5817 public elementary schools	36.3%		30.1	3950^th of 5857 public elementary schools	32.6%	244	28.8	14.2	18.3	43.3	36.7	50.7	29.8	23.7	29.3	32.3	50.8	30.4	31.5	15.7	8.8	8.9	18.5	97%	0%	$19,760	$17,368	$2,392

Frequently Asked Questions about Cobblestone Elementary

What schools do graduates of Cobblestone Elementary attend?

Students who attend Cobblestone Elementary usually go on to attend:

Middle : Riverside Meadows Intermediate
High : Wheatland Union High

What is the racial makeup of Cobblestone Elementary?

Students at Cobblestone Elementary are 36% Hispanic, 31% White, 16% Asian, 11% Two or more races, 6% African American, 1% Pacific Islander.

What district is Cobblestone Elementary in?

Plumas Lake Elementary

How many students attend Cobblestone Elementary?

In the 2024-25 school year, 590 students attended Cobblestone Elementary.

Is Cobblestone Elementary a good school?

Cobblestone Elementary ranks 2380^th of 5817 California elementary schools. SchoolDigger rates this school 3 stars out of 5.

Rate Cobblestone Elementary!

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Latest California data All new data »

2013–14 through 2024–25 immunization rates (updated)NewOct 19, 2026

2025–26 attendance data, dropout rates & graduation ratesNewOct 15, 2026

2025–26 CAST, CSA Spanish & Smarter Balanced Assessments scoresNewOct 15, 2026

2024–25 school spending dataJul 1, 2026

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.