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JCS - Mountain Oaks

Q: Is JCS - Mountain Oaks a good school?

JCS - Mountain Oaks ranks 792 nd of 5817 California elementary schools. SchoolDigger rates this school 4 stars out of 5.

Public, Charter Grades K-8

792^nd

SchoolDigger Rank ?

of 5,817 California Elementary Schools

Better than 86% of California elementary schools

Summary

JCS - Mountain Oaks is a K–8 school in Encinitas, California, serving 255 students in an area with several nearby elementary schools. In 2025–26, 69% of students were proficient in English language arts (ELA), 68% in math and 64% in science. The most important takeaway is that the school was well above California averages in all three subjects: by 20 percentage points in ELA, 29 in math and 28 in science.

Compared with nearby schools, results were more mixed: the school was around the middle in ELA and math, but its science result was above the nearby-school average. It was 3 points below the nearby average in ELA, 1 point above in math and 4 points above in science; its science score was higher than six of the nine nearby schools with results. Against available Encinitas Union Elementary district benchmarks, it was 3 points lower in ELA, 1 point higher in math and 1 point higher in science. The school’s own district results are not supplied, so these district comparisons are with Encinitas Union, not its own district.

Longer-term results are mixed: from 2022–23 to 2025–26, ELA fell 7 points, math rose 2 points and science fell 8 points, although science has rebounded 22 points from its 2023–24 low. SchoolDigger ranked the school 790th of 5,804 statewide in 2025–26, at the 86th percentile with 4 stars. Its 2024–25 student–teacher ratio was 16.2, the lowest among the listed nearby schools, and chronic absenteeism was 2% in 2025–26, also the lowest nearby rate with data. In 2024–25, 26% of students were free/reduced lunch eligible. SchoolDigger’s measure of how well the school serves White students placed the group at the 65th percentile in 2024–25, compared with the school’s overall 85th percentile that year; the group’s standing had risen from the 56th percentile in 2023–24.

255

Students ?

16.2

Student/teacher ratio ?

$14,459

Per pupil spending ?

25.9%

Free/reduced lunch eligible (2024-25) ?

All students in California receive free school meals.

86%

Kindergartners with all required immunizations (2024-25)

Exemptions: 0% (any vaccine)

539 Encinitas Blvd.
Encinitas, CA 92024-3748

(760) 632-4989

District: JCS - Mountain Oaks District

Racial breakdown:

White:

64.7%

Hispanic:

12.9%

Two or more races:

12.5%

See top rated California elementary schools

Compare JCS - Mountain Oaks to nearby elementary schools!

At a glance

▬ Ranking trend: Holding steady — 89th percentile in 2019 → 86th in 2026

Strengths

✓Test scores above the California average (68% vs 42% meeting standards)

✓Ranks in the top 14% of California elementary schools

Worth a look

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

Students meeting standards (2025-2026) ?

This school68%

California avg42%

Elementary school

792^nd of 5,817

California public elementary schools ?

Top 14%▼ down 3 pts since 2019

See the entire ranking list of California Elementary Schools →

★★★★★

SchoolDigger rating ?

Middle school

203^rd of 2,740

California public middle schools ?

Top 7%▬ steady since 2019

See the entire ranking list of California Middle Schools →

★★★★★

SchoolDigger rating ?

109^th of 1,530JCS - Mountain Oaks District 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)

Elementary school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	California percentile	Rating
2026	87.2	792 of 5817	86.4%	★★★★☆
2025	86.3	861 of 5857	85.3%	★★★★☆
2024	82.6	1050 of 5869	82.1%	★★★★☆
2023	92.4	547 of 5859	90.7%	★★★★★
2022	93.8	458 of 5883	92.2%	★★★★★
2021	96.2	65 of 1417	95.4%	★★★★★
2019	90.4	616 of 5789	89.4%	★★★★☆

Female

Year	Avg score	Statewide rank	California percentile	Rating
2026	88.1	675 of 5581	87.9%	★★★★☆
2025	83.4	915 of 5597	83.7%	★★★★☆
2024	80.2	1092 of 5612	80.5%	★★★★☆
2023	89.5	655 of 5609	88.3%	★★★★☆
2022	91.7	532 of 5635	90.6%	★★★★★
2021	93.8	89 of 1267	93.0%	★★★★★
2019	83.3	904 of 5492	83.5%	★★★★☆

Low Socio Economic Status

Year	Avg score	Statewide rank	California percentile	Rating
2024	81.2	781 of 5517	85.8%	★★★★☆

Male

Year	Avg score	Statewide rank	California percentile	Rating
2026	80.1	1068 of 5603	80.9%	★★★★☆
2025	82.8	957 of 5628	83.0%	★★★★☆
2024	80.0	1076 of 5643	80.9%	★★★★☆
2023	92.3	476 of 5638	91.6%	★★★★★
2022	92.6	470 of 5663	91.7%	★★★★★
2021	96.5	51 of 1272	96.0%	★★★★★
2019	92.1	439 of 5510	92.0%	★★★★★

White

Year	Avg score	Statewide rank	California percentile	Rating
2026	69.4	773 of 2536	69.5%	★★★☆☆
2025	65.7	918 of 2598	64.7%	★★★☆☆
2024	58.9	1164 of 2651	56.1%	★★★☆☆
2023	76.6	563 of 2661	78.8%	★★★★☆
2022	76.5	574 of 2726	78.9%	★★★★☆
2019	70.5	804 of 2834	71.6%	★★★★☆

Middle school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	California percentile	Rating
2026	92.7	203 of 2740	92.6%	★★★★★
2025	95.6	131 of 2761	95.3%	★★★★★
2024	93.4	200 of 2783	92.8%	★★★★★
2023	95.7	126 of 2781	95.5%	★★★★★
2022	94.7	149 of 2740	94.6%	★★★★★
2021	96.3	36 of 894	96.0%	★★★★★
2019	92.7	204 of 2715	92.5%	★★★★★

Female

Year	Avg score	Statewide rank	California percentile	Rating
2026	90.8	218 of 2516	91.3%	★★★★★
2025	94.6	132 of 2533	94.8%	★★★★★
2024	90.0	246 of 2551	90.4%	★★★★★
2023	91.9	202 of 2531	92.0%	★★★★★
2022	97.2	61 of 2509	97.6%	★★★★★
2021	93.9	40 of 738	94.6%	★★★★★
2019	91.3	189 of 2380	92.1%	★★★★★

Male

Year	Avg score	Statewide rank	California percentile	Rating
2026	91.7	199 of 2514	92.1%	★★★★★
2025	96.6	89 of 2534	96.5%	★★★★★
2024	96.3	96 of 2552	96.2%	★★★★★
2023	96.2	95 of 2538	96.3%	★★★★★
2022	94.6	139 of 2527	94.5%	★★★★★
2021	96.8	34 of 763	95.5%	★★★★★
2019	89.1	261 of 2407	89.2%	★★★★☆

White

Year	Avg score	Statewide rank	California percentile	Rating
2026	82.5	188 of 1490	87.4%	★★★★☆
2025	83.3	179 of 1520	88.2%	★★★★☆
2024	81.4	208 of 1537	86.5%	★★★★☆
2023	83.6	177 of 1543	88.5%	★★★★☆
2022	84.4	156 of 1555	90.0%	★★★★★
2019	78.7	284 of 1602	82.3%	★★★★☆

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)

Elementary school

Female (2026)88th percentile~ school

Low Socio Economic Status (2024)86th percentile+4 vs school

Male (2026)81st percentile-5 vs school

White (2026)70th percentile-17 vs school

Middle school

Male (2026)92nd percentile~ school

Female (2026)91st percentile~ school

White (2026)87th percentile-5 vs school

By subject vs California (2025-2026) ?

English Language Arts/Literacy69%+20 vs state

Mathematics68%+29 vs state

Science64%+28 vs state

★

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Schools Near JCS - Mountain Oaks

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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
JCS - Mountain Oaks	Public, Charter	K-8	539 Encinitas Blvd.	Encinitas	92024	San Diego County	JCS - Mountain Oaks District	Yes	(n/a)	No	(n/a)	(760) 632-4989	255	16	16.2	25.9%	165 (64.7%)	2 (0.8%)	33 (12.9%)	22 (8.6%)	1 (0.4%)	0 (0.0%)	32 (12.5%)	87.2	792^nd of 5817 public elementary schools	86.4%		86.3	861^st of 5857 public elementary schools	85.3%	69	62.5	64.7	63.6	69.6	57.7	59.4	81.1	70.0	73.5	69.3	78.3	57.7	56.3	83.8	55.0	76.5	67.7	86%	0%	$14,459	$259	$14,200
Ocean Knoll Elementary	Public	K-6	910 Melba Rd.	Encinitas	92024	San Diego County	Encinitas Union Elementary	No	(n/a)	No	(n/a)	(760) 944-4351	479	19	25.2	37.0%	235 (49.1%)	1 (0.2%)	187 (39.0%)	13 (2.7%)	0 (0.0%)	0 (0.0%)	43 (9.0%)	75.8	1336^th of 5817 public elementary schools	77.0%		76.7	1300^th of 5857 public elementary schools	77.8%	36	42.3		42.3	64.5	56.5	67.6	58.4			61.7	68.3	65.2	47.9	40.3			54.6	95%	0%	$18,793	$475	$18,318
Ada W. Harris Elementary	Public	3-6	1508 Windsor Rd.	Cardiff by the Sea	92007	San Diego County	Cardiff Elementary	No	(n/a)	No	(n/a)	(760) 632-5894	382	17	22.4	11.0%	244 (63.9%)	2 (0.5%)	55 (14.4%)	11 (2.9%)	1 (0.3%)	0 (0.0%)	69 (18.1%)	90.6	612^th of 5817 public elementary schools	89.5%		91.6	570^th of 5857 public elementary schools	90.3%	42	60.2		60.2	66.3	79.6	73.2	74.4			73.2	70.7	68.2	60.6	67.1			66.3			$17,764	$104	$17,660
Paul Ecke-Central Elementary	Public	K-6	185 Union St.	Encinitas	92024	San Diego County	Encinitas Union Elementary	No	(n/a)	No	(n/a)	(760) 944-4323	569	25	22.7	27.1%	326 (57.3%)	0 (0.0%)	170 (29.9%)	5 (0.9%)	0 (0.0%)	1 (0.2%)	67 (11.8%)	81.2	1077^th of 5817 public elementary schools	81.5%		84.3	946^th of 5857 public elementary schools	83.8%	131	50.6		50.6	55.2	65.3	61.0	74.7			63.5	62.5	69.4	45.1	67.1			60.8	≥ 98%		$18,846	$672	$18,174
Cardiff Elementary	Public	K-2	1888 Montgomery Ave.	Cardiff by the Sea	92007	San Diego County	Cardiff Elementary	No	(n/a)	No	(n/a)	(760) 632-5892	259	12	21.5	11.2%	173 (66.8%)	0 (0.0%)	35 (13.5%)	5 (1.9%)	0 (0.0%)	1 (0.4%)	44 (17.0%)								(n/a)																		≥ 98%		$24,200	$781	$23,419
Flora Vista Elementary	Public	K-6	1690 Wandering Rd.	Encinitas	92024	San Diego County	Encinitas Union Elementary	No	(n/a)	No	(n/a)	(760) 944-4329	377	15	25.1	13.3%	253 (67.1%)	0 (0.0%)	53 (14.1%)	11 (2.9%)	0 (0.0%)	0 (0.0%)	60 (15.9%)	94.6	363^rd of 5817 public elementary schools	93.8%		88.1	769^th of 5857 public elementary schools	86.9%	406	67.7		67.7	76.5	74.4	87.1	80.9			80.5	76.5	64.1	67.7	73.5			70.9	≥ 95%		$20,915	$626	$20,289
Capri Elementary	Public	K-6	941 Capri Rd.	Encinitas	92024	San Diego County	Encinitas Union Elementary	No	(n/a)	No	(n/a)	(760) 944-4360	613	25	24.5	26.1%	338 (55.1%)	1 (0.2%)	194 (31.6%)	18 (2.9%)	0 (0.0%)	0 (0.0%)	62 (10.1%)	81.7	1060^th of 5817 public elementary schools	81.8%		86	878^th of 5857 public elementary schools	85.0%	182	71.1		71.1	43.0	65.5	77.1	66.3			63.3	53.9	66.7	60.2	53.0			58.6	≥ 98%		$17,989	$431	$17,558
Park Dale Lane Elementary	Public	K-6	2050 Park Dale Ln.	Encinitas	92024	San Diego County	Encinitas Union Elementary	No	(n/a)	No	(n/a)	(760) 944-4344	424	20	21.2	24.5%	270 (63.7%)	1 (0.2%)	97 (22.9%)	7 (1.7%)	1 (0.2%)	0 (0.0%)	48 (11.3%)	80.9	1093^rd of 5817 public elementary schools	81.2%		79.7	1166^th of 5857 public elementary schools	80.1%	73	58.1		58.1	59.7	56.5	64.5	68.0			61.7	66.1	59.4	46.8	63.3			58.7	≥ 95%		$19,851	$221	$19,630
El Camino Creek Elementary	Public	K-6	7885 Paseo Aliso	Carlsbad	92009	San Diego County	Encinitas Union Elementary	No	(n/a)	No	(n/a)	(760) 943-2051	409	16	25.5	5.1%	306 (74.8%)	1 (0.2%)	38 (9.3%)	15 (3.7%)	3 (0.7%)	0 (0.0%)	46 (11.2%)	96.9	155^th of 5817 public elementary schools	97.3%		98.2	58^th of 5857 public elementary schools	99.0%	97	58.6		58.6	76.0	83.3	87.9	87.7			84.2	84.0	88.3	79.3	89.0			85.5	≥ 98%		$18,165	$361	$17,804
Olivenhain Pioneer Elementary	Public	K-6	8000 Calle Acervo	Carlsbad	92009	San Diego County	Encinitas Union Elementary	No	(n/a)	No	(n/a)	(760) 943-2000	520	22	23.6	6.5%	386 (74.2%)	6 (1.2%)	52 (10.0%)	19 (3.7%)	0 (0.0%)	0 (0.0%)	57 (11.0%)	96.3	206^th of 5817 public elementary schools	96.5%		95.4	299^th of 5857 public elementary schools	94.9%	93	72.6		72.6	78.1	87.1	84.9	81.3			82.8	77.3	85.7	78.1	66.3			76.5	≥ 98%		$18,868	$438	$18,430

Frequently Asked Questions about JCS - Mountain Oaks

What is the racial makeup of JCS - Mountain Oaks?

Students at JCS - Mountain Oaks are 65% White, 13% Hispanic, 13% Two or more races, 9% Asian.

What district is JCS - Mountain Oaks in?

JCS - Mountain Oaks District

Is JCS - Mountain Oaks a good school?

JCS - Mountain Oaks ranks 792^nd of 5817 California elementary schools. SchoolDigger rates this school 4 stars out of 5.

How many students attend JCS - Mountain Oaks?

In the 2024-25 school year, 255 students attended JCS - Mountain Oaks.

Rate JCS - Mountain Oaks!

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Latest California data All new data »

2024–25 school spending data (updated)NewNov 2, 2026

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

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

2025–26 CAST, CSA Spanish & Smarter Balanced Assessments scoresOct 15, 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.