Skip to main content

Very Good

#1873 of 9,539 schools in CA

Top 20% in state

Ocs - South

Elementary School · Ocs - South District · Altadena, CA

A charter elementary school in Altadena, CA serving grades Kindergarten – 8th.

Charter

119 West Palm St., Altadena, CA 91001

  • Math 55% vs CA 38% (2024)
  • Reading 60% vs CA 46% (2024)
  • 20.6:1 student-teacher ratio

Academics

Full Profile · 3/3 metrics
Student Progress8.4Excellent50%
Year-over-year improvement in student test scores.
View breakdown
Years of Data4
Annual Change-0.64 pts/yr
Data Period2018–2024
TrendStable
Academics8.1Excellent30%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency56.5% (2024 CAASPP)
Reading/ELA Proficiency62.2% (2024 CAASPP)
Math vs. State Avg+10.8 pts
Reading vs. State Avg+19.4 pts
Overall Proficiency59% (2024 CAASPP, Math+ELA)
Expected (poverty-adj.)57% (model expectation from 2024 CAASPP)
vs. Expected+2.1 pts
Adjusted Percentile71th
Resources & Environment5.8Average20%
Student-teacher ratio, district spending per student, and attendance.
View breakdown
Student-Teacher Ratio20.6:1
District spending per student$14,374
Chronic Absenteeism30.5%

Students at Ocs - South score 59% proficient, which is above what's typical for similar communities (expected: 57%).

How we calculate scores →

2024 CAASPP proficiency

Most recent published year. School vs. CA average.

Math Proficiency55%(2024 CAASPP)
School
State
38%(2024 CAASPP)
ELA Proficiency60%(2024 CAASPP)
School
State
46%(2024 CAASPP)

Trend

→ Steady

Proficiency has held near 58% across the 7-year record (2018–2024).

Show all 4 years by subject
2018
Math
50%
ELA
70%
2019
Math
50%
ELA
70%
2022
Math
45%
ELA
60%
2024
Math
55%
ELA
60%

Multi-year averages used by the rating model: math 53% (multi-year average, 2018-2024) · reading/ELA 62% (multi-year average, 2018-2024)

Based on 18 test records from CA state assessments and EdFacts (NCES).

Equity & diversity

Shown separately, not included in the overall score

Free/reduced lunch

30.5%

Students qualifying for federal meal assistance

How we rate schools

A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.

See how we rate

The neighborhood

Where Ocs - South sits, and what the surrounding area looks like.

Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries. Open the Los Angeles map →

Getting around & local context

  • Walk 50Somewhat Walkable
  • Bike 43Somewhat Bikeable
  • County Safety: Low245/100K

Powered byWalk Score

FBI Uniform Crime Reporting · 2024 · county context, not school-level safety or attendance eligibility. Source details

Source period: 2024. A newer release may be available.

Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)

Median income

$133,840

Median home value

$1,085,000

Median rent

$2,298/mo

College educated

52.1%

Homeownership

80.5%

Poverty rate

7.2%

ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 91001; this is area context, not an attendance boundary.

Compare nearby

Nearby same-level schools

4 from a 5-mile search

SchoolScoreGradesDistanceEnrollmentCompare
Fair Oaks SchoolPrivate · tuitionNot ratedK–60.4 mi23Compare →
Pasadena Waldorf SchoolPrivate · tuition7.3privatePK–120.4 mi184Compare →
Odyssey CharterCharter · enrollment unverified8.1K–80.7 mi466Compare →
Pasadena Rosebud AcademyCharter · enrollment unverified9.2K–80.9 mi144Compare →

Distance is proximity only; it is not attendance eligibility.

Private · tuition: Potential private option; tuition and admission requirements have not been verified.

Charter · enrollment unverified: Potential charter option; enrollment requirements have not been verified.

Public and private scores come from different models and are shown side by side, not blended into one ranking.

Ocs - South District

Schools in district
1
Rank in district
#1 of 1
District spending per student
$14,374NCES F-33 · FY 2023 · This annual source is three years behind the current year.
District child poverty rate
The source release did not match this district identifier.

Ocs - South is listed in OCS - South District; a district label does not verify attendance for an address.

About Ocs - South

Ocs - South is a public elementary school in Altadena, CA, part of Ocs - South District, serving approximately 370 students in grades Kindergarten-8th with a 20.6:1 student-teacher ratio. It holds a MySchoolScout rating of 7.8 out of 10 and ranks #1,873 of 9,539 schools in CA. State assessment records show 53% math proficiency (multi-year average, 2018-2024) and 62% reading/ELA proficiency (multi-year average, 2018-2024).

Frequently asked questions

Common questions about Ocs - South

What grades does Ocs - South serve?

Ocs - South serves students in grades Kindergarten through 8th.

How many students attend Ocs - South?

Ocs - South has an enrollment of approximately 370 students.

What is the student-teacher ratio at Ocs - South?

The student-teacher ratio at Ocs - South is 20.6:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Ocs - South rank in CA?

Ocs - South ranks #1,873 of 9,539 schools in CA.

What is Ocs - South's MySchoolScout rating?

Ocs - South has a current MySchoolScout rating of 7.8 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.

What are the test scores at Ocs - South?

Based on loaded state assessment records, Ocs - South has 53% math proficiency (multi-year average, 2018-2024) and 62% reading/ELA proficiency (multi-year average, 2018-2024).

Is Ocs - South a charter school?

Yes, Ocs - South is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.

Is Ocs - South a Title I school?

No, Ocs - South is not currently a Title I school.

What does the Free & Reduced Lunch percentage mean for Ocs - South?

30.5% of students at Ocs - South qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.

School factsNCES Common Core of Data (CCD) (SY 2023–24)

Grades
Kindergarten – 8th
Enrollment
370
Student-Teacher Ratio
20.6:1
Teachers (FTE)
18
Type
regular
Setting
Large Suburb
County
Los Angeles County
Chronic Absenteeism (SY 2022-23)
30.5%
Area population (ZIP 91001)
36,402
Area average commute
27.9 min
Area median age
46.1
About this school's data

Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.

School directory (enrollment, grades, staff, contact)
NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
  • Source period: SY 2023–24. A newer release may be available.
MySchoolScout rating and rank
MySchoolScout ranking model · Low confidence
  • Vintage not available. Do not use this measure alone.
  • Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
Math proficiency
State department of education · 2024 CAASPP · Medium confidence
  • Available for part of the eligible units; results may not represent the full area.
  • Source period: 2024 CAASPP. A newer release may be available.
  • Derived from source records rather than read directly from one field.
Reading/ELA proficiency
State department of education · 2024 CAASPP · Medium confidence
  • Available for part of the eligible units; results may not represent the full area.
  • Source period: 2024 CAASPP. A newer release may be available.
  • Derived from source records rather than read directly from one field.
Student progress (growth)
NCES EdFacts · Mixed source periods · Low confidence
  • Vintage not available. Do not use this measure alone.
  • Available for part of the eligible units; results may not represent the full area.
  • Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
Neighborhood (income, housing, education)
U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
  • Older source: ACS 2019–2023 5-year estimates. Use as historical context.
  • Reported for the ZCTA for ZIP 91001; this does not measure the attendance area.

Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2018-2024; directory SY 2023–24

About our data · How we calculate scores

Related reading

Get school insights in your inbox

New rankings, best-schools lists, and parent guides — delivered free. No spam, unsubscribe anytime.

We respect your privacy. Unsubscribe at any time.