William Tell Aggeler Opportunity High: Top STEM School in Chatsworth (2026 List)

About William Tell Aggeler Opportunity High

William Tell Aggeler Opportunity High is a public school in Chatsworth, California, that serves students in grades 7 through 12. It is a school in the Los Angeles Unified School District that is only for people who want to get better and have more opportunities. It has about 68 students. There are 17 students for every teacher at the school, which is better than the district average. It has four full-time equivalent teachers to help students learn more effectively. There are 65% boys and 35% girls in the class, and 91% of them are low-income. According to the proficiency data, 25% of students are good at reading and 5% are good at math. William Tell Aggeler Opportunity High School wants its students to do well in school and get ready for college by taking college entrance exams. People say that the academy is one of the best schools because it gives students extra help. It does a great job of giving students a structured place to learn that helps them finish school and get ready for jobs in the future, and it is one of the best high schools in California.

Academic Performance

Subject Proficiency

Mathematics 5%

Reading 25%

State average proficiency is 5% in Math and 25% in Reading.

4

Full-time Teachers

17 : 1

Student-Teacher Ratio

68

Total Students

$58409

Avg. Teacher Salary

Student Demographics

White 4.41%

Asian 1.47%

Hispanic 88.24%

Black 2.94%

Two+ Races 2.94%

Native Am. 0%

White

4.41%

Asian

1.47%

Hispanic

88.24%

Black

2.94%

Two+ Races

2.94%

Native Am.

0%

Gender Distribution

Total Students: 68

35.29%

24 Female

64.71%

44 Male

Student Population

68 Students

With a student-teacher ratio of 17 : 1

Minority Enrollment

25%

Percentage of minority students

Students per Counselor

333 : 1

Student to counselor ratio

William Tell Aggeler Opportunity High Contact Information

Address

21050 Plummer St., Chatsworth, CA, 91311

View on Map

Phone

(818) 341-1232

Call Now

Website

http://aggelerchs.lausd.org

Recent News & Updates

New Playground Name

We are so excited to announce the name of our new playground! Following a school-wide and Robinson community vote we narrowed a large list of names down to four. Since our students will be using the playground on a daily basis, we gave them the final vote! 476.....

School Timings

Regular School Hours

All Grades: 8:30 AM to 1:40 PM

Early Dismissal Days

Dismissal Time: 12:15 PM

Note: Doors open at 8:15 AM for student arrival. Please refer to the school calendar for specific early dismissal dates.

After School Activities

Information coming soon

School Session Dates

September to June

School session starts in September 1st week and ends in June 3rd week. For exact dates, please contact the school.

Remarkable Alumni

Being Updated

Map

Latest News

William Tell Aggeler Opportunity High School has successfully added more Career Technical Education (CTE) programs, giving students new ways to get certified in high-demand trades. The campus recently finished a project to update its facilities. This included adding new classroom technology and collaborative seating to make the learning environment more flexible and tailored to each student. The school has also started a student-led garden project. Students can earn elective credit while learning about environmental science and sustainable farming.

FAQ

Q1. What is the point of William Tell Aggeler Opportunity High?

Ans. The school offers an alternative education option for students who need more flexibility in their schedules and ways to make up missed credits.

Q2. Can students who went to William Tell Aggeler Opportunity High go back to a regular high school?

Ans. Yes, students can go back to a regular school once they reach their academic or behavioral goals.

Q3. Does William Tell Aggeler Opportunity High have counselors?

Ans. Yes, students get academic counseling and help to make sure they meet the requirements for graduation.

Q4. Can you use the credits you earned at William Tell Aggeler Opportunity High at another school?

Ans. Yes, most of the time, academic credits can be transferred to other public schools in the same district.

Q5. Are students allowed to take tests to get into college, like the SAT?

Ans. Yes, students at William Tell Aggeler Opportunity High can take the SAT and other tests that are required for college admission.

Games & Extracurricular Activities

Sports

Soccer Club Grades 1-3 | Mon/Wed 3:30-4:30pm
Basketball Grades 2-4 | Tue/Thu 3:30-4:45pm
Track & Field Grades 3-5 | Fri 3:30-5:00pm

Arts

Art Club Grades K-2 | Mon 3:00-4:00pm
Drama Club Grades 3-5 | Wed 3:30-5:00pm
Choir Grades 2-5 | Thu 3:15-4:15pm

Clubs

Chess Club Grades 2-5 | Fri 3:15-4:15pm
Garden Club All Grades | Tue 3:15-4:00pm
Robotics Club Grades 3-5 | Thu 3:30-5:00pm

Note: Schedules may change during school holidays. Please contact School for exact Schedule.

Summer Suggested Reading

Horn Book Selections

Vocabulary.com +3 Horn Book +3 What to Read to Your Kids +3

ML

Maggie Lou, Firefox

by Arnolda Dufour Bowes

PS

The Puppets of Spelhorst

by Kate DiCamillo

MLV

The Mona Lisa Vanishes

by Nicholas Day

Vocabulary.com Top Picks

Penguin Random House +10 Vocabulary.com +10 Wikipedia +10

F

Frindle

by Andrew Clements

WR

The Wild Robot

by Peter Brown

JGP

James and the Giant Peach

by Roald Dahl

Penguin Random House Features

Horn Book +2 Penguin Random House +2 The Guardian +2

SLB

The Secret Language of Birds

by Lynne Kelly

S

The Swifts: A Dictionary of Scoundrels

by Beth Lincoln

Free Robotics and Stem In-person Workshop in Your Neighbourhood for 7-14 Years Tech Enthusiasts.

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What Parents Say