Average
#6032 of 9,533 schools in CA
William Tell Aggeler Opportunity High
High School · Los Angeles Unified
21050 Plummer St., Chatsworth, CA 91311
Enrollment
68
Student-Teacher
17:1
Score
5.8
Grades
7th – 12th
Enrollment
68
Student-Teacher
17:1
Score
5.8
Grades
7th – 12th
Updated
2022-23
Updated 2022-23
How this school compares
In Chatsworth
#5 of 8
public schools
California high schools
#1,294 of 1,892
In district
#679 of 769
Los Angeles Unified
School environment
9.5 / 10
Exceptional
About William Tell Aggeler Opportunity High
William Tell Aggeler Opportunity High is an alternative school in Chatsworth, California, nestled within the bustling city of Los Angeles. Serving students from seventh through twelfth grade, this unique institution caters to 68 students with a student-teacher ratio of 17:1, ensuring more personalized attention and support. The school employs four full-time equivalent teachers who work tirelessly to provide an inclusive educational environment.
Despite the low MySchoolScout Rating of 3.1 out of 10 and a state ranking of 8463 out of 9566 schools in California (12th percentile), William Tell Aggeler Opportunity High focuses on fostering a supportive community where each student's growth and development are prioritized over strict academic metrics. With only 2% proficiency or above in both ELA/Reading and Math, the school continues to seek innovative ways to enhance its curriculum and better serve its students. Located in an urban setting, William Tell Aggeler Opportunity High is deeply embedded within the vibrant community of Chatsworth, offering a nurturing space for young learners to thrive.
What Parents Should Know
With an enrollment of 68 students, William Tell Aggeler Opportunity High is a smaller school where families often find a close-knit community atmosphere. Smaller settings can mean more individual attention from teachers and staff, though they may offer fewer extracurricular options than larger schools.
While current test scores at William Tell Aggeler Opportunity High are below average, the school shows strong growth metrics — meaning students are making above-average progress year over year. This upward trajectory can be a positive indicator for families who value a school's ability to help students improve, even if absolute scores haven't caught up yet.
Score Breakdown
Full Profile · 4/4 metricsView breakdown
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William Tell Aggeler Opportunity High — Students at William Tell Aggeler Opportunity High score 0% proficient, which is below what's typical for similar communities (expected: 23%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
91.2%
Students qualifying for federal meal assistance
Test Scores CA CAASPP (2023-24)
Based on 6 test records from CA state assessments. About our data
Proficiency Trend
Average proficiency (% at or above grade level) across Math & ELA over time.
Source: EdFacts (NCES) and state assessment data. Growth score: 6.1/10.
How William Tell Aggeler Opportunity High Compares
See how William Tell Aggeler Opportunity High performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has declined from 5% (2019) to 0% (2024). Reading/ELA proficiency has declined from 5% (2019) to 0% (2024).
Location
21050 Plummer St., Chatsworth, CA 91311
Nearby Alternatives
Families considering William Tell Aggeler Opportunity High may also want to explore other high schools in the area. Chatsworth Charter High (rated 6.9/10, 0.8 miles away), which scores notably higher. Additionally, Stoney Point Continuation (rated 6.5/10, 0.7 miles away), which scores slightly higher. For more schools in Chatsworth, see our Chatsworth schools guide .
Nearby Schools
20 within 1.8 miNeighborhood Census ACS (2019-2023)
Census data for ZIP 91311 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$117,574
Median Home Value
$837,300
Median Rent
$2,199/mo
Population
40,557
College Educated
44.9%
Homeownership
66.8%
Avg Commute
29.1 min
Poverty Rate
7.6%
Median Age
42.3
Community Profile
The community surrounding William Tell Aggeler Opportunity High has a median household income of $117,574. It is a well-educated community where 45% of adults hold a bachelor's degree or higher. The median home value in the area is $837,300, with a median rent of $2,199/month. The local poverty rate of 7.6% is relatively low. The average commute for residents is 29 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Albert Einstein Continuation North Hills, CA | 5.8 |
| BRIDGEPORT VOCATIONAL WEST SCHOOL Los Angeles, CA | 5.8 |
| Central High (Continuation) Barstow, CA | 5.8 |
| MESIVTA BIRKAS YITZCHOK Los Angeles, CA | 5.8 |
| Patricia Dreizler Continuation High Redondo Beach, CA | 5.8 |
| Ronald Reagan Academy Dinuba, CA | 5.8 |
Frequently Asked Questions
Common questions about William Tell Aggeler Opportunity High
What grades does William Tell Aggeler Opportunity High serve?
William Tell Aggeler Opportunity High serves students in grades 7th through 12th.
How many students attend William Tell Aggeler Opportunity High?
William Tell Aggeler Opportunity High has an enrollment of approximately 68 students.
What is the student-teacher ratio at William Tell Aggeler Opportunity High?
The student-teacher ratio at William Tell Aggeler Opportunity High is 17:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does William Tell Aggeler Opportunity High rank in CA?
William Tell Aggeler Opportunity High is ranked #6032 out of 9,533 schools in CA.
What is William Tell Aggeler Opportunity High's MySchoolScout rating?
William Tell Aggeler Opportunity High has a composite rating of 5.8 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at William Tell Aggeler Opportunity High?
Based on the most recent state assessment data, William Tell Aggeler Opportunity High has 1.7% math proficiency and 1.7% reading/ELA proficiency.
Is William Tell Aggeler Opportunity High a charter school?
No, William Tell Aggeler Opportunity High is not a charter school. It is a traditional public school operated by the local school district.
Is William Tell Aggeler Opportunity High a Title I school?
No, William Tell Aggeler Opportunity High is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for William Tell Aggeler Opportunity High?
91.2% of students at William Tell Aggeler Opportunity High qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Explore More Schools
Neighborhood Context
- County Safety
- Low (245/100K)
FBI UCR 2024. County-level only. Data >1 year old.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 7th – 12th
- Enrollment
- 68
- Student-Teacher Ratio
- 17:1
- Teachers (FTE)
- 4
- Free/Reduced Lunch
- 91.2%
- Type
- alternative
- Setting
- Large City
- County
- Los Angeles County
- Phone
- (818) 341-1232
- Data Year
- 2023–2024
Resources & Links
District
Los Angeles Unified- District Enrollment
- 419,929
- Schools in District
- 785
- Per-Pupil Spending
- $22,687
- District Rank
- #679 of 769
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
Read our full methodologyRelated reading
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