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OCS - South

Q: Is OCS - South a good school?

OCS - South ranks 2095 th of 5804 California elementary schools. SchoolDigger rates this school 3 stars out of 5.

Public, Charter Grades K-8

2095^th

SchoolDigger Rank ?

of 5,804 California Elementary Schools

Better than 64% of California elementary schools

Summary

OCS - South is a K–8 school in Altadena, serving 392 students in a community with several nearby elementary schools and charter schools. In 2025–2026, its all-grades proficiency was above California’s in English language arts (ELA), math, and science, but its results have declined since 2022–2023. The key finding for parents is that the school remains above state averages, while its earlier advantages have narrowed substantially.

Math is the school’s strongest subject relative to the state: 48% of students were proficient, 10 points above the state; science was 43%, 7 points above; and ELA was 52%, just 2 points above. Among eight nearby schools with current-year results, OCS ranked third in all three subjects, behind Paradise Canyon Elementary and Altadena Elementary. Results also vary by grade: grade 6 math stood out at 64%, compared with 37% statewide, while grade 5 math was 19%, versus 37% statewide. A direct proficiency comparison with the OCS - South District is not available; SchoolDigger ranks the district at the 80th percentile, a district ranking rather than a test-score comparison.

The longer-term trend is a concern: since 2022–2023, OCS’s ELA proficiency fell from 70% to 52%, math from 60% to 48%, and science from 60% to 43%; its leads over the state narrowed from 24 to 2 points in ELA, 26 to 10 in math, and 30 to 7 in science. SchoolDigger’s school ranking also dropped from the 77th percentile (4 stars) in 2024–2025 to the 64th percentile (3 stars) in 2025–2026. Context includes a 19.6 student–teacher ratio and 29% of students classified as free/reduced lunch eligible in 2024–2025; that measure is not the same as whether students can receive free meals. SchoolDigger’s 2024–2025 subgroup ranking placed the school at the 97th percentile for Hispanic students, compared with the 77th percentile overall—a notably higher standing for how well the school serves that group. Chronic absenteeism improved to 21% in 2025–2026 from 32% in 2022–2023, but remained above the state’s 18%.

392

Students ?

19.6

Student/teacher ratio ?

$27,126

Per pupil spending ?

28.6%

Free/reduced lunch eligible (2024-25) ?

All students in California receive free school meals.

575 West Altadena Dr.
Altadena, CA 91001-4203

(626) 209-5635

District: OCS - South District

Racial breakdown:

Hispanic:

35.2%

White:

33.4%

Two or more races:

14.3%

See top rated California elementary schools

Compare OCS - South to nearby elementary schools!

At a glance

▼ Ranking trend: Declining — 73rd percentile in 2022 → 64th in 2026

Strengths

✓Test scores above the California average (49% vs 42% meeting standards)

✓Above the California median (64th percentile)

Worth a look

!Ranking has slipped — down 9 percentile points since 2022

Students meeting standards (2025-2026) ?

This school49%

California avg42%

Elementary school

2,095^th of 5,804

California public elementary schools ?

Top 36%▼ down 10 pts since 2022

From top 27% (2022) to top 36% (2026)

See the entire ranking list of California Elementary Schools →

★★★★★

SchoolDigger rating ?

Middle school

469^th of 2,703

California public middle schools ?

Top 17%▼ down 11 pts since 2023

From top 6% (2023) to top 17% (2026)

See the entire ranking list of California Middle Schools →

★★★★★

SchoolDigger rating ?

193^rd of 968OCS - South 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	59.4	2095 of 5804	63.9%	★★★☆☆
2025	75.2	1360 of 5857	76.8%	★★★★☆
2024	75.7	1348 of 5869	77.0%	★★★★☆
2023	86.3	898 of 5859	84.7%	★★★★☆
2022	71.4	1559 of 5883	73.5%	★★★★☆

Female

Year	Avg score	Statewide rank	California percentile	Rating
2024	56.4	2109 of 5612	62.4%	★★★☆☆
2023	73.2	1359 of 5609	75.8%	★★★★☆
2022	58.7	1995 of 5635	64.6%	★★★☆☆

Hispanic

Year	Avg score	Statewide rank	California percentile	Rating
2025	95.1	160 of 5107	96.9%	★★★★★
2024	80.4	708 of 5107	86.1%	★★★★☆
2023	87.0	471 of 5087	90.7%	★★★★★
2022	73.5	994 of 5084	80.4%	★★★★☆

Low Socio Economic Status

Year	Avg score	Statewide rank	California percentile	Rating
2025	76.1	958 of 5460	82.5%	★★★★☆
2024	81.4	777 of 5517	85.9%	★★★★☆
2023	72.8	1082 of 5363	79.8%	★★★★☆

Male

Year	Avg score	Statewide rank	California percentile	Rating
2026	56.1	2183 of 5590	60.9%	★★★☆☆
2025	76.5	1217 of 5628	78.4%	★★★★☆
2024	81.0	1040 of 5643	81.6%	★★★★☆
2023	89.8	627 of 5638	88.9%	★★★★☆
2022	77.7	1207 of 5663	78.7%	★★★★☆

White

Year	Avg score	Statewide rank	California percentile	Rating
2024	65.7	941 of 2651	64.5%	★★★☆☆
2023	79.1	464 of 2661	82.6%	★★★★☆
2022	54.2	1332 of 2726	51.1%	★★★☆☆

Middle school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	California percentile	Rating
2026	79.7	469 of 2703	82.6%	★★★★☆
2025	64.5	798 of 2761	71.1%	★★★★☆
2024	77.2	547 of 2783	80.3%	★★★★☆
2023	94.0	174 of 2781	93.7%	★★★★★

Male

Year	Avg score	Statewide rank	California percentile	Rating
2024	72.4	583 of 2552	77.2%	★★★★☆

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

Hispanic (2025)97th percentile+20 vs school

Low Socio Economic Status (2025)82nd percentile+6 vs school

White (2024)65th percentile-13 vs school

Female (2024)62nd percentile-15 vs school

Male (2026)61st percentile-3 vs school

Middle school

Male (2024)77th percentile-3 vs school

By subject vs California (2025-2026) ?

English Language Arts/Literacy52%~ state avg

Mathematics48%+10 vs state

Science43%+7 vs state

★

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Schools Near OCS - South

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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 Immunizations 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)							% Completely Immunized (2022)	% Polio (2022)	% Hepatitis B (2022)	% Varicella (2022)	% DTP (2022)	% MMR (2022)	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	% Completely Immunized KG	% Polio KG	% Hepatitis B KG	% Varicella KG	% DTP KG	% MMR KG	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
OCS - South	Public, Charter	K-8	575 West Altadena Dr.	Altadena	91001	Los Angeles County	OCS - South District	Yes	(n/a)	No	(n/a)	(626) 209-5635	392	20	19.6	28.6%	131 (33.4%)	28 (7.1%)	138 (35.2%)	39 (9.9%)	0 (0.0%)	0 (0.0%)	56 (14.3%)	59.4	2095^th of 5804 public elementary schools	63.9%		75.2	1360^th of 5857 public elementary schools	76.8%	735	42.9		42.9	33.3	52.6	38.1	60.0	60.0		51.5	50.0	52.6	19.1	64.0	46.7		48.5							$27,126	$26,438	$688
Odyssey Charter	Public, Charter	K-8	725 West Altadena Dr.	Altadena	91001	Los Angeles County	Odyssey Charter District	Yes	(n/a)	No	(n/a)	(626) 229-0993	463	18	25.7	25.5%	209 (45.1%)	31 (6.7%)	123 (26.6%)	29 (6.3%)	0 (0.0%)	0 (0.0%)	71 (15.3%)								(n/a)
Altadena Elementary	Public	K-5	743 East Calaveras St.	Altadena	91106	Los Angeles County	Pasadena Unified	No	(n/a)	No	(n/a)	(626) 396-5650	527	23	23.4	52.9%	142 (26.9%)	65 (12.3%)	232 (44.0%)	20 (3.8%)	1 (0.2%)	0 (0.0%)	67 (12.7%)	71.6	1502^nd of 5804 public elementary schools	74.1%		57.7	2184^th of 5857 public elementary schools	62.7%	682	52.6		52.6	56.3	52.3	61.5				57.0	54.7	45.5	50.6				50.2	81.6	86.8	93.4	92.1	85.5	84.2	$23,173	$21,400	$1,773
Mary W. Jackson STEAM Multilingual Magnet Elementary	Public	K-5	593 West Woodbury Rd.	Altadena	91001	Los Angeles County	Pasadena Unified	No	(n/a)	No	(n/a)	(626) 396-5700	658	27	24.6	51.8%	98 (14.9%)	67 (10.2%)	413 (62.8%)	9 (1.4%)	0 (0.0%)	0 (0.0%)	67 (10.2%)	48.5	2686^th of 5804 public elementary schools	53.7%		46.2	2811^th of 5857 public elementary schools	52.0%	125	36.8		36.8	44.2	45.9	49.5				46.5	37.9	42.9	28.4				36.5	93.9	93.9	93.9	93.9	93.9	93.9	$19,881	$18,162	$1,719
Washington Elementary STEM Magnet	Public	K-5	1520 North Raymond Ave.	Pasadena	91103	Los Angeles County	Pasadena Unified	No	(n/a)	No	(n/a)	(626) 396-5840	428	20	21.6	86.0%	14 (3.3%)	41 (9.6%)	351 (82.0%)	12 (2.8%)	1 (0.2%)	0 (0.0%)	9 (2.1%)	17.9	4977^th of 5804 public elementary schools	14.2%		27.7	4159^th of 5857 public elementary schools	29.0%	818	19.0		19.0	9.4	28.4	25.9				22.2	15.1	27.0	22.4				22.2	96.2			96.2			$28,623	$24,974	$3,649
Aveson School of Leaders	Public, Charter	K-5	524 Palisade St.	Pasadena	91101	Los Angeles County	Aveson School of Leaders District	Yes	(n/a)	No	(n/a)	(626) 797-1440	279	17	16.7	27.6%	148 (53.0%)	14 (5.0%)	72 (25.8%)	28 (10.0%)	1 (0.4%)	0 (0.0%)	15 (5.4%)								(n/a)																		53.9	75.4	81.5	72.3	73.9	78.5
Alma Fuerte Public	Public, Charter	K-8	524 Palisade St.	Pasadena	91103	Los Angeles County	Alma Fuerte Public District	Yes	(n/a)	No	(n/a)	(626) 204-5265	227	12	18.9	77.1%	5 (2.2%)	35 (15.4%)	174 (76.7%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	13 (5.7%)								(n/a)
Longfellow (Henry W.) Elementary	Public	K-5	1065 East Washington Blvd.	Pasadena	91104	Los Angeles County	Pasadena Unified	No	(n/a)	No	(n/a)	(626) 396-5720	546	23	24.2	74.2%	42 (7.7%)	69 (12.6%)	396 (72.5%)	9 (1.6%)	0 (0.0%)	3 (0.5%)	27 (4.9%)	45	2904^th of 5804 public elementary schools	50.0%		50	2593^rd of 5857 public elementary schools	55.7%	311	33.7		33.7	39.1	40.5	48.8				43.2	53.1	35.4	24.7				36.4	95.8	98.3	98.3		98.3		$25,175	$22,516	$2,659
Paradise Canyon Elementary	Public	K-6	471 Knight Way	La Canada	91011	Los Angeles County	La Canada Unified	No	(n/a)	No	(n/a)	(818) 952-8340	715	29	24.7	4.8%	293 (41.0%)	1 (0.1%)	86 (12.0%)	242 (33.8%)	0 (0.0%)	0 (0.0%)	93 (13.0%)	98.3	42^nd of 5804 public elementary schools	99.3%		97.9	83^rd of 5857 public elementary schools	98.6%	41	89.8		89.8	86.1	81.9	89.8	89.5			86.8	89.5	82.8	80.6	84.8			84.2							$23,281	$23,138	$143
Madison Elementary	Public	K-5	515 Ashtabula St.	Pasadena	91104	Los Angeles County	Pasadena Unified	No	(n/a)	No	(n/a)	(626) 396-5780	411	17	24.9	79.1%	2 (0.5%)	15 (3.6%)	390 (94.9%)	2 (0.5%)	0 (0.0%)	0 (0.0%)	2 (0.5%)	18.3	4944^th of 5804 public elementary schools	14.8%		13.8	5359^th of 5857 public elementary schools	8.5%	415	18.3		18.3	31.3	17.1	29.6				26.0	33.3	17.4	11.3				20.4	95.7			96.8			$27,278	$25,254	$2,024

Frequently Asked Questions about OCS - South

Is OCS - South a good school?

OCS - South ranks 2095^th of 5804 California elementary schools. SchoolDigger rates this school 3 stars out of 5.

What district is OCS - South in?

OCS - South District

How many students attend OCS - South?

In the 2024-25 school year, 392 students attended OCS - South.

What is the racial makeup of OCS - South?

Students at OCS - South are 35% Hispanic, 33% White, 14% Two or more races, 10% Asian, 7% African American.

Rate OCS - South!

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Latest California data All new data »

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

2024–25 attendance dataMar 13, 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.