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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.

Recent News

WeTip - Be the solution

WeTip

Be the Solution. If you have information regarding crime or misconduct at your school, call WeTip anonymously.

The Chaffey District Cares

The Chaffey District cares about your mental well-being. We partner with community agencies and mental health professionals to provide support to our students and staff. If you, or someone you know, is in crisis please contact the Community Crisis Response Team (909) 421-9233 - Click 'Read Full Story' for more information.

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

Tom Mitchell
Greetings Titans,
 
I would like to thank our staff, parent volunteers, and student leaders for assisting with all things Colony High School which ensured the smooth opening to the 2021-2022 school year.  As I have mentioned to many, this opening is not like any others.  Coming back from a long campus lay-off has its challenges but together we overcame. 
 
As we progress through this first quarter, we will keep our focus on those things I have shared:  Safety, Fun, and Learning.  Remember the goals for Freshman Success, A-G completion and staying on track for graduation.  Know that we have interventions in place, for all students, and will be working to ensure all goals are met.  If you have questions or concerns regarding credit recovery, A-G remediation, or need assistance with getting connected to school, please come by the office to meet with a counselor or an administrator-we are here to assist you.
 
Knowing the effects of Distance Learning and the current pandemic situation are taxing to both social and emotional needs, it is important for students to have open access for support.  Each student’s assigned counselor is available and willing to meet as needs arise.  We also employ Marriage and Family Therapist (MFT’s) who are on campus daily and available to address social and emotional needs.  It’s important to understand how critical personal support is and Colony High School is ready to serve those needs.  At the student level, we also have a wonderful Peer Counseling Department that is ready to have students talk to students as needed.   It is my wish for all students to feel they have a campus that is safe, focused on learning, and is willing and ready to support their every need.
 
I am so excited to be back to an in-person instructional setting.  I know it will take time to work out all the details, but together We Can Achieve.  I love the Colony Titans and will do all I can to ensure a smooth first quarter.  Remember the importance of finding your F-I-T and how much better achievement can be when connected with school.  I appreciate your partnership as we work to establish the safe and welcoming environment that all students deserve at Colony High School.
 
I love you All,
 
 
Principal Mitchell