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Colony 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.

Recent News

Real Talk

Real Talk: HBCU Edition

Real Talk : HBCU Edition Join us for a two-night event featuring HBCUs across the country
Parent Academy College Workshops Featured Photo

Parent Academy College Workshops

This workshop will inform parents of the different types of financial aid programs available for paying for a college education to ensure that tuition, books, housing and educational expenses do not become an obstacle in preventing your child from attending college. Come be informed on how to access “FREE” financial aid from the government and learn about the FAFSA application process, Federal Grants, State Cal Grants, the student work-study program and student and parent loans.

Upcoming Events

School Facts

  • 65% of Colony High School graduates meet the University of California and California State University A-G admissions requirements, making it a leader in San Bernardino County.
  • 90% of freshmen at Colony 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.
  • 900 Advanced Placement exams are administered to students at Colony High School annually.

Principal's Message

Mr. Mitchell
Welcome to Spring Semester 2021.  I know you are joining me in the happiness of a New Year.  As we move into 2021, I hope and pray time is taken to prepare ourselves to reap the blessings bestowed on us from the past year.  The year 2020 is definitely something to put behind us, but there was so much learned. It would all be for not if we didn’t somehow grow from it.
Moving into the new semester, there are still a few uncertainties to contend with surrounding the pandemic.  So many of us have had to deal with the dreadfulness of the pandemic as it relates to health, work, or everyday lifestyle changes.  I am thankful to be working in a school system that is striving to stay in front of the health concerns and to not put staff and or students in harm’s way.  I so badly want to have a campus full of activity but trust that Distance Learning is the best solution for right now.  We will continue to monitor the data and rely on the guidance of the local agencies as we move through this semester.
So many have asked about sports and most importantly senior activities.  At this point, all are to be considered postponed until further notice.  Postponed does not mean “not being planned”. We will be in contact with all student athletes, as well as with seniors, as it relates to Sports and Senior Activities.  I appreciate your patience and cooperation as it relates to things our students so desire and wish to participate in.
Our office will continue to stay open for normal business so please feel free to stop by as needed.  To ensure safety for all stakeholders, we will have additional measures in place to eliminate close contact.  If you need technology assistance, please give us a call so we can make the necessary arrangements for you prior to arriving.  If you need assistance with Canvas or Aeries Portal, please give us a call and we will put you in contact with the right personnel to help you out.
As we work through changes for second semester, I ask that you review the slightly revised daily schedule.  Please monitor your student’s daily engagement with their classes and make sure they are submitting their work and meeting the daily expectations of all courses.  Please communicate circumstances that may hamper your student’s success and know we are here to assist as needed.
Mr. Mitchell