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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

  • 69% of Montclair High School graduates meet the University of California and California State University A-G admissions requirements, making it a leader in San Bernardino County.
  • 88% of freshmen at Montclair 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.
  • 1000 Advanced Placement exams are administered to students at Montclair High School annually.
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Principal's Message

Charlene Saenz, Principal
Dear Montclair Students and Parents,
 
I can hardly believe it; we are halfway through the second semester!
 
This school year has presented a set of challenges that many of us could have never imagined, and yet we have persevered. Students, I hope you are proud of how far you’ve come in this journey. You have chosen to remain hopeful and optimistic through these trying times, and now we are embarking upon what will hopefully become the highlight of our year, our anticipated safe return to campus!
 
San Bernardino County is approaching a less restrictive COVID-19 tier, which will allow for the reopening of high schools for in-person hybrid learning. In-Person Hybrid Instruction will begin on either April 13th or April 14th, depending on students’ schedules. Students will have a choice to either begin, in-person hybrid (physically attending twice per week) or remain in Distance Learning for the remainder of the 2020-2021 school year. For students who select to continue on distance learning, they will remain at home but follow the Hybrid Instruction schedules (for more information, please click the Reopening Schools Update tab).
 
We are also approaching the academic testing season, the administration of the Smarter Balanced Assessment Consortium (SBAC), English Language Proficiency Assessments for California (ELPAC), and Advanced Placement (AP) Exams. We recognize the significant impact that the COVID-19 pandemic has had on student learning and simply encourage our students to do the best that they can. At this time, it is unknown how student achievement data will be reported and analyzed due to the suspension of the CA Dashboard in 2020.
 
Nonetheless, I encourage our Cavaliers to stay strong and determined to succeed. We are here to support you in any way that we can and look forward to seeing you in April!
 
Your proud principal,
 
Ms. Saenz
 
Testing Dates:
• ELPAC Testing -   March 8th-12th
• SBAC/CAASPP (Math and English) for all 11th grade students and CAST (Science) for all 12th grade students -        Throughout the month of April (dates to follow)
• AP Testing (subject exams may need to be administered in-person or digitally, for information regarding a specific   exam, please contact the Achievement Office)
 Administration 1: May 3–7, 10–12, 14, and 17
 Administration 2: May 18–21, 24–28
 Administration 3: June 1–4, 7–11
 
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