Alternative school · Los Angeles Unified

William Tell Aggeler Opportunity High

21050 Plummer Street, Chatsworth · 61 students · Grades 7–12

How to enroll
Compare

Compare schools

Choose up to four high schools.

Type at least two characters to search.

Save

Shared campus · © OpenStreetMap

William Tell Aggeler Opportunity High and Aggeler Community Day share this address in the state’s school directory. OpenStreetMap maps the grounds as one campus. Which buildings each school uses here isn’t mapped.

Drawn from OpenStreetMap, with building heights from LA County. Volunteers map it, so a new building may be missing.

A picture of the campus, not an attendance boundary or a rating.

Schools maintain a closed campus policy. For students’ safety, visitors may enter a campus only with the school’s official permission; this drawing implies no permission to enter.

Needs Support18th percentile. Ranked only against California alternative high schools. Higher than 18 of the 97 other scored California alternative high schools.

William Tell Aggeler Opportunity High is an alternative school. Students are enrolled through a placement, application, or referral process specific to the program.

In 2024–25, 50% of the class graduated in four years (15 of 30); across California’s alternative high schools, 35%.

Source for this line
Source
CDE four-year adjusted cohort graduation rate (ACGR), 2024–25
Students
students who started 9th grade together: 30
Comparison
Alternative high schools with a graduation record: graduates divided by students who started 9th grade together, across 122 public schools’ rows (our combination, not CDE’s published state rate; 8,737 of 24,956). It counts every school with a graduation record, so it can differ from the number of schools we rank.

Overview

Is this school a good high school?

56 of 63 students missed 10% or more of school days in 2025–26. That is about twice the rate at the average California alternative high school we score.

Source for the sentence above
Source for the sentence
CDE chronic absenteeism file, 2025–26. All students counted for chronic absence (CDE’s eligible enrollment): 63. The California figure is an average of school rates (96 scored California alternative high schools), our calculation.

In its own words

What does this school say about itself?

We haven’t read William Tell Aggeler Opportunity’s website yet. Until we do, the school’s own site is the best place to hear it in its own words.

Open aggelerchs.lausd.org (opens in a new tab)

Over time

Have results changed?

English stayed at 0% and math stayed at 0%.

Share at the state’s top two test levels, 2017 to 2026

Grade 11. Point at a year, tap it or use the arrow keys to read its figures.

English

No comparable testsNo tests25%50%201720182019202320242025202616%0%William Tell Aggeler OpportunityThis school

Math

No comparable testsNo tests25%50%20172018201920232024202520260%0%William Tell Aggeler OpportunityThis school

The hatched block marks years with no comparable state test results. Each spring tests a different group of students. Between 12 and 24 students were tested here each year in each subject. With 12 students, one student is 8 points, so each year is a dot and no line joins them. Source: California Department of Education, state tests (CAASPP).

Each year’s results

The top two levels were called Met or Exceeded before 2026 and are called Proficient or Advanced now.

English, grade 11: share at the top two levels
SpringWilliam Tell Aggeler OpportunityTested here
201716%19
20180%17
20197%15
20234%24
20240%17
20250%16
20260%12
Math, grade 11: share at the top two levels
SpringWilliam Tell Aggeler OpportunityTested here
20170%18
20180%17
20190%15
20230%24
20240%17
20250%15
20260%12

A year is missing where fewer than the state’s minimum number of students tested and the state withheld the result.

Tests

How did students here do on state tests?

None of the 12 students tested scored Proficient or Advanced in English; none did in math.

English

0%

scored Proficient or Advanced.

7525
California alternative high schools33%

Math

0%

scored Proficient or Advanced.

100
California alternative high schools14%
MinimalDeveloping levelProficientAdvanced

In grade 11, spring 2026, none of the 12 students tested scored Proficient or Advanced in English, against 33% at California alternative schools. In math, none did, against 14% at California alternative schools. Fewer than 30 students tested, so one year’s result can change a lot. Ask how results looked in other years.

The state published these results on October 15, 2026. What changed across California. Spring 2026, grade 11 combined. From spring 2026, the state calls its top two levels “Proficient or Advanced” (formerly “Met or Exceeded”). Source: California Department of Education, state tests (CAASPP).

Results for each grade, spring 2026

What each level means: California's level descriptions.

English

English, grades 7 and 8: share of students tested, spring 2026
MeasureGrade 7Grade 8
Proficient or Advancedsuppressednot on file
Advancedsuppressednot on file
Proficientsuppressednot on file
Developing levelsuppressednot on file
Minimalsuppressednot on file
Tested4not on file
English, grade 11: share of students tested, spring 2026
MeasureGrade 11
Proficient or Advanced0%
Advanced0%
Proficient0%
Developing level25%
Minimal75%
Tested12

Math

Math, grades 7 and 8: share of students tested, spring 2026
MeasureGrade 7Grade 8
Proficient or Advancedsuppressednot on file
Advancedsuppressednot on file
Proficientsuppressednot on file
Developing levelsuppressednot on file
Minimalsuppressednot on file
Tested4not on file
Math, grade 11: share of students tested, spring 2026
MeasureGrade 11
Proficient or Advanced0%
Advanced0%
Proficient0%
Developing level0%
Minimal100%
Tested12

A grade the school doesn't teach has no row. “Suppressed” marks a result CDE blanks because fewer than 11 students tested (CDE’s reporting rule); “none tested” marks a grade CDE lists with no students tested; “not on file” marks a result missing from the records we hold. None of them means zero.

All four test levels, with the number of students tested
Share of students tested at each level, spring 2026. The state’s test levels Advanced, Proficient, the Developing level (formerly Nearly met) and Minimal.
StudentsAdvancedProficientDeveloping levelMinimalTested
English, grade 11 · This school0%0%25%75%12
English, grade 11 · California alternative high schools10%23%29%38%11,827
Math, grade 11 · This school0%0%0%100%12
Math, grade 11 · California alternative high schools8%6%12%74%11,786

Spring 2026, grade 11 combined: 12 tested in English, 12 tested in math. California alternative schools combines those schools’ results, weighted by students tested (our calculation).

Who goes here

Who goes here?

Hispanic or Latino students are the largest group here, at 89% of students. 56 of 63 students missed 10% or more of school days.

Missing school, 2025–26

56of 63

students were chronically absent. That means they missed 10% or more of school days. That is 89 in 100.

At the average California alternative high school we score: 44 in 100.

Students, 2024–25

61

students in grades 7–12.

Hispanic or Latino 89%

Family income

95%

of students qualified for free or reduced-price meals in 2024–25, 58 of 61.

Teachers, 2024–25

6

teachers, with 14 years of experience on average.

17% were in their first year.

28% of teaching positions had the right credential, 2021–22.

Suspensions, 2025–26

6.3%

of students were suspended at least once (5 of 79). Average California alternative high school we score 1.0%.

Sources: California Department of Education. Each tile names its year.

Full student mix, 2025–26
StudentsHere
Hispanic or Latino89%
White—
Asian—
Black or African American—
Filipino—
Two or more races—
American Indian or Alaska Native—
Pacific Islander—
Not reported—
Where these figures come from

Attendance and suspensions: California Department of Education, 2025–26. Student mix: the students the state’s attendance file counts, 2025–26; a dash means our records hold no count. Student count: California Department of Education enrollment, 2024–25. Teachers: California Department of Education staffing files, 2024–25.

Teaching credentials: California’s School Accountability Report Card, 2024–25, measured in 2021–22: 1.1 of 4 full-time teaching positions. It counts positions, not individual teachers.

After high school

How many students here graduate in four years?

50% of students graduated in four years in 2024–25. That compares with 35% at California alternative high schools. 10% were ready for college or career (state measure) in 2024–25.

ready for college or career (state measure), 2024–25

10%

of graduates finished the UC/CSU course list, 2024–25

27%

Graduation, college and university records

Preparation · each measure describes a different student group

Graduated in four years

50%

California alternative high schools: 35%

2024–25 · 15 of 30 students who started 9th grade together

Ready for college or career (state measure)

10%

California alternative high schools: 11%

2024–25 · 3 of 30 students in the state’s measure

Finished the UC/CSU course list

27%

California alternative high schools: 19%

2024–25 · 4 of 15 graduates finished the UC/CSU course list

Where these figures come fromEach measure’s source, student group and definition
Graduated in four years
2024–25 · 15 of 30 students who started 9th grade together. California Department of Education, adjusted cohort graduation records. Comparison is SchoolScope’s combination of graduates and cohort counts across the reference schools, not CDE’s published state rate.
Ready for college or career (state measure)
2024–25 · 3 of 30 students in the state’s measure. California Department of Education, College/Career Indicator (CCI), overall “Prepared” rate, among the students in the indicator’s group. Prepared is CDE’s overall classification, not AP participation or a college admission rate. Comparison is SchoolScope’s combination of Prepared students and indicator students across California alternative high schools, not a CDE figure.
Finished the UC/CSU course list
2024–25 · 4 of 15 graduates finished the UC/CSU course list. California Department of Education, A–G completion records (graduates who met the UC/CSU course requirements). Course completion is separate from college enrollment. Comparison is SchoolScope’s combination of graduates who finished the list across California alternative high schools, not a CDE figure.

What people say

What do students, families and staff say?

Los Angeles Unified asked the people at William Tell Aggeler Opportunity in 2025–26. Each line shows the share who gave a positive answer.

27

students answered
This schoolShare who gave one of the two most positive answers. Each line runs from 40% to 100%.

Students

27 answered

Feeling safe82%
Belonging72%
Caring adults83%
Having a say67%
High expectations88%
  • Happened to them 2 or more times in 30 days · lower is better
  • Had mean rumors or lies spread about you?12%
  • Been made fun of because of your looks or the way you talk?8%

Each line is the average of the survey’s questions on that theme. The themes are our grouping. We show a question only when at least 20 people answered it. These answers are not part of the Scope Score. Source: Los Angeles Unified, School Experience Survey, 2025–26. Survey results (opens in a new tab)

All 46 student questions
QuestionHereAnswers
Safety
I feel safe in this school or in online school sessions82%27
Belonging
This school is a supportive and inviting place for students to learn77%26
I am happy to be at this school69%26
I feel like I am part of this school72%25
I feel accepted for who I am at this school76%25
Most kids at this school are kind to each other63%27
LGBTQ (lesbian, gay, bisexual, transgender, and/or queer) students at this school are accepted74%27
Caring adults
Teachers go out of their way to help students88%26
The teachers at this school treat students fairly92%24
Teachers care if I'm absent from school88%25
Adults at this school treat all students with respect82%27
There is an adult at my school whom I trust and can talk to no matter what is bothering me69%26
There is at least one adult at my school who supports me85%26
Teachers at my school know me77%26
If I told a teacher or other adult at this school that another student was bullying me, he or she would try to help me82%27
Engagement
Teachers give students a chance to take part in classroom discussions or activities88%26
My teachers make learning fun85%26
Students have a voice in decision making at this school65%26
Teachers encourage students to make decisions70%23
There are lots of chances for students at my school to get involved in sports, clubs, or other school activities outside of class52%25
I participate in extra-curricular activities offered through my school, such as school clubs or organizations, musical groups, sports teams, student government, or any other extra-curricular activities44%25
High expectations
In my classes, my teachers tell me how I can make my work better92%26
Adults at this school encourage me to work hard so I can be successful in college or at the job I choose88%26
Adults at this school have helped me learn the details of getting into college (completing applications, financial aid, etc)85%26
Bullied 2 or more times in the past 30 days
Had mean rumors or lies spread about you?A lower share means fewer students reported it.12%26
Been made fun of because of your looks or the way you talk?A lower share means fewer students reported it.8%26
Been pushed, shoved, slapped, hit or kicked by someone who wasn't kidding around?A lower share means fewer students reported it.0%26
Been bullied online?A lower share means fewer students reported it.8%26
Had sexual jokes, comments, or gestures made to you?A lower share means fewer students reported it.8%26
Other questions
The teachers at this school grade me fairly81%26
Students know how they are expected to act69%26
Adults at this school clearly inform students what would happen if they break school rules84%25
What is the highest level of education that you plan to complete?—20
I can change my intelligence with hard work80%25
I can increase my intelligence by challenging myself65%26
I am capable of learning anything84%25
I feel safe in the neighborhood around this school78%27
I can do well on all my tests, even when they're difficult54%26
I can master the hardest topics in my classes58%26
I can meet all the learning goals my teachers set69%26
I came to class prepared58%26
I remembered and followed directions88%25
I paid attention, even when there were distractions80%25
How well did you get along with students who are different from you?65%26
When others disagreed with you, how respectful were you of their views?77%26
How carefully did you listen to other people's points of view?77%26

A dash means fewer than 20 people answered, or the survey file we hold gives no share for the question.

About the survey and these figuresWho answers, what we show, and how a theme figure is made

Los Angeles Unified School District, School Experience Survey 2025–26 (researcher file). Students in grades 4–12 take it; some questions go only to older grades.

Los Angeles Unified publishes no minimum number of answers. We show a question only when at least 20 people answered it, and a group only when at least 10% of it responded, so the answers speak for more than the few who chose to reply. Los Angeles Unified’s figures cover all its schools at each level, so they aren’t shown beside this school.

Fewer than 20 people answered each family question here, so those answers aren’t shown.

Fewer than 20 people answered each staff question here, so those answers aren’t shown.

Each row shows the percentage its label describes. For a theme, such as one marked “average of 5 questions”, we average the percentages for its questions, the way Los Angeles Unified averages its own topics. Each lane lists every question with its own percentage.

Family and staff answers

What would staff tell you?

Staff can answer a short set of questions about William Tell Aggeler Opportunity. These are not star ratings or reviews.

  1. Staff answers show once 5 people have answered.Until then this page shows no staff answers.
  2. The questions are about the school, never a person.No question asks about a named teacher or staff member.
  3. Answers are never part of the Scope Score.They sit beside the state’s records and do not change a school’s score.
  4. Staff confirm a work email.Staff answers come only from people who confirmed an email address at Los Angeles Unified.

Staff

No staff answers yet

5 answers needed before they show

  • Would you send your own child to this school?Yes · Maybe · No
  • Do you plan to work at this school next year?Yes · Not sure · No
  • Do you have the materials and supplies you need to teach?Usually · Sometimes · Rarely
  • And 5 more questions.

Answer the staff questionsHow staff answers work

Money

Where does the money go?

$49,258 for each student in 2024–25. California’s high schools spent $20,309 for each student. Los Angeles Unified’s plan for 2026–27 covers $7.9 billion.

$49,258

for each student at this school, 2024–25
Spent at the school
$44,226
The school’s share of district office costs
$5,032
Of the total, from federal funds
$1,251
  • William Tell Aggeler Opportunity$49,258
  • Los Angeles Unified high schools$23,805
  • California high schools$20,309

The district and California figures combine their high schools, weighted by enrollment (our calculation, 1,655 California schools). Spending does not show how well money is used. Source: California Department of Education, per-school spending report, 2024–25. Funding records ↓

Los Angeles Unified’s yearly plan

$7.9billion

in the district’s plan for 2026–27

$1.8billion

planned for services for English learners, low-income students and foster youth
  • Academic Excellence$5.8 billion
  • Operational Effectiveness$1.0 billion
  • Joy and Wellness$521 million
  • Investing in Staff$268 million
  • Black Student Achievement Plan Implementation$135 million
  • Engagement and Collaboration$68 million
  • Equity Multiplier$35 million
  • English Learner Supports$30 million

This is the district’s plan. It is not this school’s own budget. Each part of the bar is one goal in the plan, with the money for its actions added up (our calculation). The plan covers $7.9 billion of $11.3 billion in total budgeted spending. Source: Los Angeles Unified Local Control and Accountability Plan (LCAP), 2026–27. Read the district’s plan →

The neighborhood

What is the area around this school like?

These figures are for everyone who lives in ZIP code 91311. They are not figures for the families at William Tell Aggeler Opportunity.

Typical household income in a year

$119,386

Typical means half are higher and half are lower. The ZIP code is the school’s address, not its attendance area. Source: U.S. Census Bureau, American Community Survey, 2020–2024, ZIP code area 91311.

Typical home value
$876,400
People who live in this ZIP code
40,898
Typical age
42.3 years
Adults 25 and older with a four-year college degree
46%

What you can do

Who can act on this school’s results?

Los Angeles Unified’s board decides William Tell Aggeler Opportunity’s plan.

How to take part

  1. Watch the board’s agenda: the hearing is posted at least 72 hours ahead.
  2. Send written comments on the actions and spending the plan proposes.
  3. Raise questions through the district’s parent advisory committee; the superintendent must answer its comments in writing.
  4. Read the midyear report, due by February 28.

State support

The state hasn’t placed William Tell Aggeler Opportunity in a support program. Federal designation under the Every Student Succeeds Act, 2025–26. Source 

Extra state help for the district

The state is giving Los Angeles Unified extra help in 2026. It qualified on the 2025 California School Dashboard. The county office must help the district for at least three years, including a review of its yearly plan.

Extra help for Los Angeles Unified: CDE’s assistance status file for the 2025 California School Dashboard. Source 

Questions to ask

What should I ask, and when?

Bring these 8 questions to William Tell Aggeler Opportunity. Confirm anything about applying with the school itself.

On a tour

  1. Do families get each child’s absence count during the year, and what happens once a child starts missing school?56 of 63 students chronically absent, 2025–26; average California alternative high school: 44 in 100
  2. When a bullying report comes in, who handles it, and how is the family told?7% (the average share reporting being bullied 2 or more times in the past 30 days, across 5 survey questions), 2025–26
  3. What extra help do students who are behind get, and how do you know it’s working?100% in English and 100% in math scored at the Developing or Minimal level, grade 11, spring 2026 (12 students tested in each); Schools in its class: 67% and 86%
  4. Which courses and career pathways does the school run, and who can enroll?
  5. How do counselors help students plan for college, training or work?
  6. What support is available when a student falls behind on graduation requirements?

At the office

  1. What time does the day start and end, and is any day shorter?
  2. Is there care before or after school, and what does it cost?

Getting in

How do I get in?

Ask William Tell Aggeler Opportunity how students enroll.

Where it is

Where is this school?

Address
21050 Plummer Street, Chatsworth 91311Get directions (opens Google Maps in a new tab)
Administrator
Juan OrtizAs the state’s school directory lists it, last updated August 8, 2024.

Nearby high schools

The closest first, by straight-line distance from this campus. No standing is shown beside William Tell Aggeler Opportunity: it is compared only with schools of its own kind.

  1. Chatsworth Charter High0.8 mi · Charter school. Check how it admits students.

See these schools on the map

A school’s place on the map is its address in the state directory. It does not show which homes the school serves. See nearby schools on the map

Short answers to 5 common questions

How do I get in?

Ask William Tell Aggeler Opportunity how students enroll. See the details ↓

Is William Tell Aggeler Opportunity a good alternative school?

William Tell Aggeler Opportunity High scores higher than 18 in 100 of the 98 California alternative high schools we score, compared only within that group: 18th percentile, Needs Support, spring 2025. Why alternative schools are ranked separately. See the details ↓

How often do students miss school or get suspended?

In 2025–26, 56 of 63 students missed 10% or more of school days, against 44 in 100 at the average California alternative high school we score. 6.3% of students (5 of 79) were suspended at least once in 2025–26, against 1.0% at the average California alternative high school we score. See the details ↓

What do students say?

82% of students agreed or strongly agreed with “I feel safe in this school or in online school sessions” (27 answered).

  • Source: Los Angeles Unified School District School Experience Survey, 2025–26

See the details ↓

What should I ask on a visit?

The questions drawn from this page are under Questions to ask, ready to copy. See the details ↓

The full record

Source records

This page is built from 10 sets of records from public data sources. Every figure keeps its source, grades, year and count.

Data updated

October 15, 2026

Record sets on this page
10
Sources
California Department of EducationU.S. Census BureauU.S. Department of Education, Office for Civil Rights
State test years
2017–2026

Results

Students

After high school

Money and staff

Place, downloads and method

Score factorssource values and weights · 2024–25 · ranked #80 of 98 California alternative high schools we score
Score factors, 2024–25
FactorSchoolWeight
Graduation rate50%25%
Exceeded standardaverage of English and math0%22%
Ready for college or career (state measure)10%20%
Met or exceededaverage of English and math0%18%
Chronically absent71 of 935%
Suspension rate9.1% (10 of 110)5%
English learners: top level0%5%

William Tell Aggeler Opportunity High is ranked only among California alternative high schools, so this table sets it beside no other school; the chapters above compare each figure with that class. School values are from 2024–25. Chronic absence and suspension are CDE's all-students school rates; the score uses an adjusted version of each that pulls small schools toward the average.

Scope Score by year2018–19 to 2024–25 · each year’s inputs, and the score for each year we could verify

The 2024–25 Scope Score, in the current-formula row below, uses the state’s college-or-career readiness measure, 2024–25. No verified earlier Scope Scores are available here.

Scope Score

School yearScope ScorePercentileRankComparison group
2024–25—18#80California alternative high schools · 98 schools · current formula

2018–19, 2022–23 and 2023–24 have records on file but no Scope Score we could verify against that year’s source files, so no score is shown for them.

School yearChronic absenceSuspension
2018–1976 in 1000 of 242
2022–23not on filenot on file
2023–2466 of 950.9% (1 of 115)
2024–2571 of 939.1% (10 of 110)

Chronic absence and suspension are CDE’s all-students school rates for each year.

No 2019–20 or 2020–21 records in this SchoolScope series
Every tested year2017–2026 · rates, tested counts, and each grade

English and math by test year · all tested grades

Year · subjectStudents with scoresTop levelTop two levels
2026 · English170%0%
2026 · Math176%6%
2025 · English170%0%
2025 · Math160%0%
2024 · English250%0%
2024 · Math250%0%
2023 · English343%3%
2023 · Math340%0%
2022 · English9——
2022 · Math9——
2019 · English380%3%
2019 · Math370%0%
2018 · English360%0%
2018 · Math350%0%
2017 · English3110%10%
2017 · Math320%0%

Each year names its school year end (2026 = 2025–26). “Students with scores” counts each subject on its own, so don’t add the English and math counts together. A dash is unavailable, not zero.

Earlier years · grade and subject

Year · grade · subjectStudents with scoresMet or exceeded
2025 · Grade 8 · English——
2025 · Grade 11 · English160%
2025 · Grade 8 · Math——
2025 · Grade 11 · Math150%
2024 · Grade 7 · English——
2024 · Grade 8 · English6—
2024 · Grade 11 · English170%
2024 · Grade 7 · Math——
2024 · Grade 8 · Math6—
2024 · Grade 11 · Math170%
2023 · Grade 7 · English——
2023 · Grade 8 · English8—
2023 · Grade 11 · English244%
2023 · Grade 7 · Math——
2023 · Grade 8 · Math8—
2023 · Grade 11 · Math240%
2022 · Grade 7 · English——
2022 · Grade 8 · English——
2022 · Grade 11 · English7—
2022 · Grade 7 · Math——
2022 · Grade 8 · Math——
2022 · Grade 11 · Math7—
2019 · Grade 7 · English4—
2019 · Grade 8 · English190%
2019 · Grade 11 · English157%
2019 · Grade 7 · Math4—
2019 · Grade 8 · Math180%
2019 · Grade 11 · Math150%
2018 · Grade 7 · English——
2018 · Grade 8 · English120%
2018 · Grade 11 · English170%
2018 · Grade 7 · Math——
2018 · Grade 8 · Math120%
2018 · Grade 11 · Math170%
2017 · Grade 7 · English——
2017 · Grade 8 · English——
2017 · Grade 11 · English1916%
2017 · Grade 7 · Math——
2017 · Grade 8 · Math——
2017 · Grade 11 · Math180%

Current 2025–26 grade results are under Academic achievement, in Results for each grade. “Students with scores” counts the students tested in that grade, subject and year. A missing result is not zero, and each year’s row is a different group of children.

Attendance and suspensionsState records · this school and each student group · 2018–19 and 2025–26

CDE’s all-students school rates for 2024–25 and 2025–26; the change is the difference between the two rates as printed.

Year-over-year school rates
Chronic absenteeism2024–25 · 71 of 93 → 2025–26 · 56 of 63
Suspension rate2024–25 · 9.1% (10 of 110) → 2025–26 · 6.3% (5 of 79) · −2.8 percentage points
Group2018–192025–26Change
Female50 of 6118 of 19—
Male73 in 10038 of 44—
Black or African American13 of 16——
Hispanic or Latino76 in 10051 of 56—
White9 of 12——
Students with disabilities22 of 3628 of 33—
English learners23 of 3010 of 12—
Foster youth10 of 17——
Low-income75 in 10050 of 56—
All students76 in 10056 of 63—

Two reported school years only; no intervening-year result is implied. Where fewer than 100 students were counted, the cell shows the count and no change is printed. Source: CDE school-level chronic absenteeism by student group.

Graduation and readinessstate records · each rate for its own year and class of students
MeasureSource record
This school · CCI overall PreparedCDE College/Career Indicator · CCI source year 2025 · all students · all students in the current four-year graduation cohort, plus only Prepared fifth-year graduates from the prior cohort. Overall CCI Prepared rate 10% · numerator 3 students classified Prepared · denominator 30 CCI students.
AP pathway among CCI Prepared studentsCDE College/Career Indicator · CCI source year 2025 · all students · AP pathway rate 0% · AP-pathway numerator 0 · denominator 3 (CCI Prepared students). This measure uses Prepared students as its denominator, not the whole CCI cohort; it is not an AP exam-taking rate or a count of AP courses offered. That cohort includes all students in the current four-year graduation cohort plus only Prepared fifth-year graduates from the prior cohort. In 2025 the pathway accepts two qualifying AP exams, two qualifying AP courses, or a combination of one of each in different subjects.

CDE's overall Prepared rate is the college-readiness factor in the Scope Score (20% of the high school score). The school rate is 3 of 30 CCI students, not the AP-only pathway or A–G completion rate. The school CCI rate has its own student cohort and source year.

Graduation rate
50%
AP route, among those ready for college or career
0%
2025 CDE CCI cohort · AP courses, exams, or both; share of students ready for college or career (CDE’s “Prepared”), not course offerings
Finished the UC/CSU course list (A–G)
27%
A–G are the 15 courses (across 7 subjects) required for UC/CSU eligibility

These source periods and populations differ: graduation uses an adjusted cohort, while A–G completion and college-going use separately reported groups. The rates are shown individually, without a shared performance tier.

Advanced coursework, federal snapshot2023–24 · Civil Rights Data Collection · dated historical snapshot
MeasureThis school
AP offerednot reported
AP course countnot reported
AP enrollment (male/female)not reported
IB participationnot reported
Dual enrollmentnot offered
Algebra I in grade 8not reported
Calculus sections0
Physics sections9
Chemistry sections0
Reported male/female enrollment (CRDC)68

These counts aren’t part of the Scope Score. “Not reported” means the federal record has no value for that item; it isn’t a zero. Enrollment counts add the male and female students the survey reports.

Fundingschool and district spending, from state and federal finance records · each row names its fiscal year and measure

Per-pupil spending

District · current expense$18,180 per pupil

NCES F-33 · FY 2020–21 (2021) · fall district membership: 460,633 pupils

California · selected district mean$14,491 per pupil

NCES F-33 · FY 2020–21 (2021) · SchoolScope’s unweighted mean across 818 selected California district finance records

School-level federal expenditures$698 per pupil

CDE ESSA · school-attributed per-pupil record · FY 2024–25 (2025) · source denominator: 61

Central federal expenditures attributed here$553 per pupil

CDE ESSA · central expenditures attributed to this school · FY 2024–25 (2025) · source denominator: 61

District current expense · FY 2024–25$29,292 per ADA

CDE SACS Current Expense of Education · district fiscal year ending 2025 · average daily attendance denominator

These figures are not directly comparable: school ESSA attributed spending and NCES district current expense use different measures and populations. Their fiscal years are labeled above.

How the California mean was selected

SchoolScope starts with its selected California finance records, not every NCES California district. For FY 2020–21, it calculates an unweighted mean of NCES F-33 current expense per pupil. District records contribute once, regardless of enrollment. The calculation keeps records with positive per-pupil current expense, enrollment over 100, CCD agency type 1, and a recorded district name; it excludes names ending in County Office of Education, Department of Education, or Superintendent of Schools. This is a SchoolScope calculation, not a state-published spending average.

Selected General Fund operating costs · FY 2024–⁠25 · SchoolScope calculation
Instruction 52%Instruction support 17%Student services 12%Administration 7%Buildings & maintenance 10%Other 2%
The arithmetic behind these shares · FY 2024–25
GroupDollarsShare, to two decimalsPrinted
Instruction$5,655,379,38451.81%52%
Instruction support$1,791,152,34816.41%17%
Student services$1,344,873,23212.32%12%
Administration$763,652,7807.00%7%
Buildings & maintenance$1,099,649,06210.07%10%
Other$260,356,5952.39%2%
Total$10,915,063,400100.00%100%

These shares are our arithmetic: each group’s dollars divided by the $10,915,063,400 total of the groups shown, rounded to whole percents by largest remainder so they add up to 100. Dollar amounts are rounded to the nearest dollar, so they can differ from the total by a dollar. SchoolScope groups district-level CDE SACS UserGL actuals from Fund 01, using operating objects 1000–5999 and excluding retiree benefits, food and community services, facilities acquisition, other outgo, and nonagency goals. These shares use that filtered total; they do not exactly break down CDE's official current expense per ADA above. The school-level ESSA figure uses a separate source.

NCES F-33 district fiscal-year history, 2017–⁠2021; latest district record shown: 2021
2021$18,180 per pupil
2020$16,355 per pupil
2019$15,793 per pupil
2018$13,247 per pupil
2017$13,549 per pupil

Source: NCES F-33 · Full district breakdown →

Staffing recordsstate teacher credential-and-placement and district salary records · each for its own year

Additional workforce records

Properly assigned intern credential holders0.0%

CDE 2024–25 SARC, Teacher Preparation and Placement table; measured school year 2021–22. Share of reported school teaching-position full-time equivalents assigned to properly assigned intern credential holders. A reported 0.0% is shown; unavailable rates are omitted. This is a position share, not a count of current teachers or of emergency permits.

The surrounding ZIP codeCensus Bureau survey, 2020–2024 · ZIP 91311 · not the school’s students
American Community Survey 5-year estimates · 2020–2024 · ZIP 91311 area
MeasureEstimate
Median household income$119,386
Bachelor's degree or higher (adults 25+)46%
ZIP-area population40,898
Median age42.3 years

Source: U.S. Census Bureau, American Community Survey, 2020–2024 5-year estimates. Median household income covers the past 12 months and is reported in 2024 inflation-adjusted dollars. Bachelor's degree or higher uses adults age 25 and over as its population. A dash is unavailable, not zero; a reported zero remains zero. ZIP-area figures do not establish the school's attendance area or describe its enrolled students. These figures are not part of the Scope Score. See all schools in ZIP code 91311 →

Downloads, embed and methodologyCSV · embed code · sources · corrections

Embed this scorecard

<iframe
  src="https://schoolscope.co/embed/school/william-tell-aggeler-opportunity-high-0064"
  width="100%" height="210" loading="lazy"
  style="border:0;border-radius:12px"
  title="William Tell Aggeler Opportunity High — SchoolScope scorecard">
</iframe>

Free to embed with the credit link. Data updates automatically.

Data sources: public data sources, including the California Department of Education · state tests (CAASPP) 2025–26 · Scope Score from 2024–25 results, compared across 98 alternative high schools · attendance and suspensions by student group from 2018–19 and 2025–26 · district finance for the year each row names · Census survey (ACS) 2020–2024 · federal civil rights data (CRDC) 2023–24, a past snapshot · school type “Opportunity Schools” in the state school directory, which we call an alternative school · Los Angeles Unified School District School Experience Survey 2025–26 · Data updated October 15, 2026

  • Each percentile compares it only with California alternative high schools.
  • No student group comparison is shown for this school this year: either no group had 30 or more students tested in each subject, or no same-grade district or state rate was available for its groups.