The brief
A private high school in La Habra, CA serving grades 6th – 12th.
Cleta Harder Developmental School is a private school: it enrolls by application and tuition, and its rating comes from the private-school model, which is not comparable with a public rating.
About this school's data2 sources, 2019–2024
Every number on this page comes from a published source with a stated period. Where a source is partial, aging, an estimate, or describes a surrounding area rather than the school, that limitation is named here.
- Based on limited data: 0% component coverage.
- We don't have enough verified data to rate this school fairly. Private schools in CA aren't required to report standardized test scores to the state, which limits the data available for our rating model. Our rating model requires at least 2 of 4 data components (academics, student progress, college readiness, and resources) to generate a meaningful score. Schools below this threshold receive a Limited Profile to avoid misleading ratings. Learn more about our methodology
- School directory (enrollment, grades, staff, contact)
- NCES Private School Universe Survey (PSS) · SY 2023–24 · Low confidence
- Vintage not available. Do not use this measure alone.
- 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 90631; this does not measure the attendance area.
Evidence periods: Rating not displayed; assessments vintage unavailable; directory SY 2023–24
The neighborhood
Where it sits, and what the area looks like.Open the Los Angeles school map to see school quality against home prices across the metro.
The area
- Median income
- $102,208
- Median home value
- $757,900
- Median rent
- $2,029/mo
- College educated
- 32%
- Homeownership
- 61.5%
- Poverty rate
- 9.1%
U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 90631; this is area context, not an attendance boundary.
Getting around
- Walk Score
- 79
- Very Walkable
- Bike Score
- 46
- Somewhat Bikeable
- City reported crime
- 1,669/100K
- Reported Part-1 offenses (violent + property + arson) per 100,000 residents, from the FBI Uniform Crime Reporting program for La Habra. This is a city-level reported-crime measure, not a school safety rating.
Walk, transit and bike scores by
FBI Uniform Crime Reporting · 2025 · city context (La Habra), not school-level safety or attendance eligibility. Source details
Source period: 2025. Freshness not available.
Programs and who goes here
What the campus offers, and who it enrolls.Who goes here
- Hispanic61%
- Asian13%
- Two or More13%
- Black9%
- White4%
Enrollment mix: NCES Private School Universe Survey (PSS).
Compare nearby
Grade-compatible schools using the same rating model.- 6.8Compare →
- 6.8Compare →
- 6.5Compare →
- 5.0Compare →
- Cleta Harder Developmental Schoolnot rated
- not ratedCompare →
- not ratedCompare →
- not ratedCompare →
- not ratedCompare →
Distance is proximity only; it is not attendance eligibility.
Private · tuition: Potential private option; tuition and admission requirements have not been verified.
The record
What is on file, and where each number came from.Questions families ask
What grades does Cleta Harder Developmental School serve?
Cleta Harder Developmental School serves students in grades 6th through 12th.
How many students attend Cleta Harder Developmental School?
Cleta Harder Developmental School has an enrollment of approximately 23 students.
What is the student-teacher ratio at Cleta Harder Developmental School?
The student-teacher ratio at Cleta Harder Developmental School is 7.7:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.
Is Cleta Harder Developmental School a private school?
Yes, Cleta Harder Developmental School is a private coeducational school with a Nonsectarian affiliation. Private schools are not required to participate in state standardized testing, so academic performance data may be limited compared to public schools.
Is Cleta Harder Developmental School a religious school?
No, Cleta Harder Developmental School is a nonsectarian (non-religious) private school.
School facts
- Grades
- 6th – 12th
- Enrollment
- 23
- Gender split
- 87% M / 13% F
- Student-teacher ratio
- 7.7:1
- Teachers (FTE)
- 3
- Type
- Private
- Coed status
- Coed
- Affiliation
- Nonsectarian
- School day
- 6.2 hours
- Days per year
- 180 days
- Setting
- Large Suburb
- County
- Orange County
- Phone
- (562) 694-5655
- Area population (ZIP 90631)
- 68,615
- Area average commute
- 30.4 min
- Area median age
- 39.2
NCES Private School Universe Survey (PSS) (SY 2023–24).
Sources and official links
Keep exploring
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Data from NCES Common Core of Data, California Dept. of Education, and U.S. Census ACS for the 2023–24 school year. Rankings computed by MySchoolScout. See all data sources.