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Mr. Omar MayenOmar Mayen
Phone: 909.971.8230 ext 3010
Prior to this position, Mr. Mayen served as a High School Assistant Principal in the Corona Norco Unified School District (CNUSD) and for twelve years as a high school special education teacher at Santiago High School in CNUSD. He has also served as the Summer School Principal of Corona High School. Mr. Mayen obtained his Bachelor of Arts in Sociology at CSU, Long Beach, and his Master of Science in Special Education at National University.
Omar enjoys spending time with his wife Monica, an elementary school teacher, and his two children Niko (9) and Charlotte (4). They enjoy outdoor activities, going to the beach, traveling, and spending time together with his extended family who are all nearby. Mr. Mayen, an avid golfer, enjoys traveling and playing at famous golf courses. He is an adjunct professor at the University of Redlands teaching inclusive practices to credential and masters candidates.
photo of Assistant Principal Jack Nance and his familyMr. Jack Nance
Assistant Principal of Academic Success
Phone: 909.971.8230 x3033
I have been a counselor at San Dimas High School and Lone Hill Middle School. For the last 10 years, I have been the Assistant Principal of Academic Success at San Dimas High School. I am so proud of the students who attend San Dimas High School.
I grew up in Chandler, Arizona, and attended Chandler High School. I spent my freshman year at Scottsdale Community College, the home of the Artichokes. That is correct, the mascot is an artichoke. I received my bachelor's degree at Azusa Pacific University in Physical Education. Then my master's degree and administrative credential at Azusa Pacific University.
I have four kids. Three of my kids graduated from San Dimas High School. My oldest Tyler is a Lineman for the California/Nevada. My daughter, Hannah,  attended the Air Force Academy and is now married in Mississippi. Ben is attending Cal Poly Pomona. My youngest, Jacob is a senior at SDHS.

It is my honor to serve as Assistant Principal at San Dimas High School. San Dimas High School is destined for great things and I am so excited to be a part of it. I look forward to helping students and staff to reach the great expectations San Dimas High School has established. Getting involved is the best way to reach these expectations in the quick four years of high school. Four years that students remember for a lifetime.

Dr. Brianna Nix
Assistant Principal of Student Support                                      Dr. Nix
Phone: 909.971.8230 x3036

I am excited to be working with the wonderful team at San Dimas High School. I have been in the field of education for the past nine years working as a foster and homeless youth Educational Liaison, a District Counselor, Assistant Principal of Student Services grades 6 thru 12, Middle School Principal, and now Assistant Principal of Student Wellness.
I am a proud graduate of the University of California, Los Angeles- Go Bruins! – with a bachelor’s degree in Sociology. Even though I am Bruin at heart, I am also a graduate of the University of Southern California with a Master’s in Education and emphasis on School Counseling and Pupil Services. I went on to earn a Doctorate in Educational Leadership from California State University, Northridge. Lastly, I graduated with my second Master’s in Education, School Leadership, and completed my Administrative Credential from California State University, Dominguez Hills. I grew up in Pomona and graduated from Pomona High School. I loved marching in the band and both Pomona High and UCLA.
I have a passion for helping students reach their full potential and I look forward to helping our students succeed. Through Student Wellness, we strive to heal and support the Saints community through accessible, quality care and prevention education

Mr. Philip Heng
Assistant Principal of School Environment                                    

Phone: 909.971.8230 x3032
I am excited to serve the students, parents, and staff of San Dimas High School as Assistant Principal. I have previously served as an instructional coach, department chair, and math teacher in the Monrovia Unified School District and Los Angeles Unified School District spanning 13 years. 

I grew up in El Monte and graduated from Arroyo High School. I earned my bachelor’s degree in mathematics and a master’s degree in education from UCLA. Go Bruins! I completed my administrative credential at Cal Poly Pomona and am also currently mentoring new students in the Preliminary Administrative Credential Program as a consultant. I love all new and future Bronco graduates! 

My wife, Genevieve, is also a proud educator as an elementary special education teacher. We are raising two beautiful girls, Leanne and Jordan. With the help of two grandmothers, our family does our best to cultivate a trilingual and tricultural household of English, Chinese, and Spanish. We are a family that loves hiking on weekend mornings, enjoying a family movie night with plenty of popcorn, and experimenting with baking sweets.

I absolutely loved, loved, loved my high school experience. I learned to be an avid runner by completing two marathons on the marathon team. I learned to be an active community member through volunteering at Key Club. In addition to excelling in academics, I intend for every San Dimas High student to find their life passions through the many wonderful clubs, sports, and organizations on campus.