William Tell Aggeler Opportunity High
Opportunity SchoolsGrades 7–12Active
21050 Plummer Street, Chatsworth, CA 91311-4903
(818) 341-1232
Overall Score (2024-25)
↓ 0.1 ptsvs 2023-2427
out of 100
Below AverageTop 80% statewideData completeness: 75%
Academic Achievement3
CA avg
Academic Growth80
CA avg
School Climate13
CA avg
College/Career Readiness29
CA avg
Score reflects percentile ranking among same-type schools. How is this calculated?
Test Scores (2024-25)
Percentage of students meeting or exceeding standards on CAASPP/CAST.
English Language Arts0.0%
CA avg 48.8%
Mathematics0.0%
CA avg 34.6%
Science / CAST (2024-25)0.0%
CA avg 32.7%
By Grade
| Grade | ELA % | Math % | Science % | Tested |
|---|---|---|---|---|
| 08 | — | — | — | — |
| 11 | 0.0% | 0.0% | — | 16 |
Enrollment & Demographics (2024-25)
61
Total Students
95.1%
Free/Reduced Lunch
16.4%
English Learners
Staff (2024-25)
10.2:1
Pupil-Teacher Ratio
Graduation Rates (2024-25)
↑ 34.0%50.0%
Graduation Rate
26.7%
Met UC/CSU Reqs
16.7%
Dropout Rate
Chronic Absenteeism (2024-25)
↑ 6.8%76.3%
Chronically Absent
93
Students Tracked
Historical Trends
Year-over-year performance data from official CDE records.
Composite Score
ELA Proficiency %
Math Proficiency %
Science / CAST %
Graduation Rate %
Chronic Absenteeism Rate %
Total Enrollment
Parent & Community Reviews
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Data sourced from the California Department of Education. CDS Code: 19647331930064. Academic Year: 2023-24 – 2024-25.