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About Sierra High School

Sierra High School is a fully accredited California Model Continuation High School serving students 16 years of age and older. Although some students are placed at Sierra for disciplinary reasons, most are placed because they are behind in credits and need specialized attention within an alternative educational environment.  Students may also choose Sierra as an alternative to attending a comprehensive high school.  Sierra High School is on a trimester system which allows students to enroll in up to six courses each session.  Students may earn up to 90 credits per year, giving them an increased opportunity to earn the 220 credits required for a high school diploma.  In addition to full time enrollment at Sierra, students may earn additional credits through the Regional Occupational Program (ROP) and through the Azusa Adult School.

Central to the school’s philosophy is the belief that provided a personalized, caring, and enriched environment students will develop to their fullest potential.  The ultimate goal of Sierra High School is to develop a person who is willing to accept and display the responsibilities of good citizenship and to perform satisfactorily as a contributing member of our society.

Message from Sierra's Principal Theresa Petersen

Sierra Principal Theresa Petersen

Welcome back to an exciting new academic year at Sierra High School! As the new Principal, I am thrilled and honored to join the Sierra High School family. As we embark on this journey together, I want to take a moment to introduce myself and share my vision for our alternative education high school.

First and foremost, I am a firm believer in the power of education to transform lives. The overwhelming majority of my career has been in alternative education and it is clear to me that here at Sierra High School, we are not just another high school. We are a family, a close-knit community. Our commitment to providing an alternative education program stems from the belief that each student possesses unique talents, abilities, and passions. We strive to encourage students to explore, grow, and develop their full potential and help bring their vision of a successful future into focus.

One of my top priorities as the new principal is to maintain a strong sense of community within our school. I believe in open communication and collaboration. I look forward to meeting you in the near future and working together to continue to grow Sierra High School and the model of alternative education excellence. 

As we embark on this new school year, I encourage all students to embrace challenges, seek knowledge, and take advantage of the diverse opportunities that Sierra High School has to offer. 

If you have any questions, ideas, or concerns, please do not hesitate to reach out. My door is always open.

Let's make this academic year the best one yet!


Sierra High School is a place where students have a second opportunity to achieve academic success. To bring this aspiration into reality we: Model and Build Good Relationships, Develop Skills and Knowledge, & Foster Independent Thinking in a Safe Environment.


Sierra High School is an alternative education program that provides a personalized, enriched, and varied environment that enables students to develop their full potential. With collaboration of a caring staff and support of their family and community, students will graduate with strong vision for a successful future.