Weekly Schedule for Students and Parents

To see a complete description of how students should be engaging in school Monday – Friday, please click “Read Full Story.”

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Los Osos High School Home

About Us

The Chaffey Joint Union High School District serves the communities of Ontario, Montclair, Rancho Cucamonga, and portions of Fontana, Upland, Chino, and Mount Baldy. With over 25,000 students, the District is the fourth largest high school district in California. It has eight comprehensive high schools, a continuation high school, an online high school, a community day school, an adult school, and alternative programs. The District offers a wide variety of instructional options that provide a quality education for each student, every day. The District's well-prepared, dedicated, and highly qualified teachers and support personnel are second to none.
The Chaffey Joint Union High School District Board of Trustees are steadfast in the belief that "Nothing is more important than student learning and their achievement."
Our daily purpose encompasses our commitment:
"To provide student learning, and ultimately their achievement, of the prescribed curriculum that takes place in the classroom under the direction of the teacher." The Chaffey District supports this daily act. We realize that our efforts uniquely influence the future of our community and of this nation, and we are passionate about doing whatever it takes to prepare students to be successful and contributing citizens of the 21st century.
The Chaffey District has provided a quality education for high school students in the area since 1911. As the District continues to grow and progress, we are poised to meet the challenge of providing the finest quality education possible for every student. 
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All CJUHSD students will graduate ready for college and careers.

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School Facts

  • 70% of Los Osos High School graduates meet the University of California and California State University A-G admissions requirements, making it a leader in San Bernardino County.
  • 98% of freshmen at Los Osos High School complete their first year of high school on track to graduate.
  • The CJUHSD has been named a Top Workplace by the Press-Enterprise and Inland News Group.
  • 2500 Advanced Placement exams are administered to students at Los Osos High School annually.
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Principal's Message

Joshua Kirk, Principal
Grizzly Nation,
Welcome to the 2020-2021 school year! The first days of school are always filled with excitement and anticipation, but with the impact of COVID-19 challenges, social justice unrest and a new Instructional model/schedule we have never experienced a start to the school year quite like this. With that said, I have complete trust in our staff to make this the best opening possible.
COVID-19 Safety Measures
We still have some work to do to get ourselves ready for staff and students to return to campus in the traditional model.  However, please know that safety is a top priority thus we have established procedures to protect all stakeholders. Cleaning and disinfecting products which meet San Bernardino County Department of Public Health standards have been purchased and will be used frequently throughout the day in classrooms, restrooms, and other common areas.
While on campus, all are required to wear face masks in addition to having their temperatures checked and answer brief health questions prior to entering campus.  Social distancing guidelines will be practiced and multiple hand sanitizer dispensers, portable hand washing stations, and well-stocked restrooms will be available to ensure proper personal hygiene for students and staff members throughout the day. 
SEL & Equity
We are also aware that all of us, including our students, have been impacted by the social unrest we have witnessed in our country.  Our district has made a clear commitment to the importance of the work of social and emotional learning and equity in and out of our classrooms to best serve our school communities. 
This includes, but not limited to, ensuring we are diversifying our literature taught on our campuses to accurately represent the multiple races and cultures of our student body.  It includes ongoing professional development for staff on how to incorporate SEL and culturally responsive teaching strategies in our classrooms and curriculum.  And addressing the importance of implementing equitable policies and procedures that do not create barriers for people of color and historically marginalized groups.     
Distance Learning Instruction
We begin the 2020-21 school year in a distance learning model. Students will need to register in Canvas, our new learning management system, to access their classes. Information on how students and parents can register for Canvas can be found on our website.
What is a distance learning model and how does it work?
Distance learning means instruction in which the student and instructor are in different locations. This may include interacting using a computer and communications technology.
Distance Learning Bell Schedule
Beginning on Thursday, August 6th and Friday, August 7th, students will log in to Canvas to attend school virtually in a block schedule. Teachers may schedule virtual in-person instruction and/or independent learning and/or learning in groups.  Moving forward, this will be the same schedule that students have Tuesday-Friday while we are in a distance learning model. 
  Tuesday Wednesday Thursday Friday
6:45 - 8:15 Period 0   Period 0  
8:15 - 9:45 Period 1 Period 4 Period 1 Period 4
9:45 - 11:15 Period 2 Period 5 Period 2 Period 5
11:15 - 12:15 Lunch Lunch Lunch Lunch
12:15 - 1:45 Period 3 Period 6 Period 3 Period 6
1:45 - 2:35 Teacher Office Hours Teacher Office Hours Teacher Office Hours Teacher Office Hours
1:45 - 3:15   Period 7   Period 7
What will Monday’s look like?
The school day will begin at 7:45. Teachers will provide weekly plans, check-in with their 2nd period class for attendance, and be available for instructional support from 12:35-2:35.
  Monday Schedule
7:45 - 8:45 Login to Canvas/Check-in
8:45 - 11:15 Begin Schoolwork
11:15 - 12:15 Lunch
12:15 - 12:35 2nd Period Check-in/SEL/Attendance
12:35 - 2:35 Teacher Office Hours

Students in Distance Learning
As part of our mission to ensure that all students graduate ready for college and careers, students are expected to attend and participate in class daily, complete and turn in assignments in a timely manner and follow the distance learning schedule. Along the way, we will work through any challenges with you.
We are committed to supporting our students and families, so if you need help please give us a call or stop by our front office during regular business hours of 7:15am - 3:45pm Monday - Friday.  If you need tech support, please contact our tech support hotline at 909-946-8226.
Even with the challenges that lie ahead, we are excited to begin the year with you as we work through all these situations together.  That is what We>I is all about!
Claws Up!!