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About Us

Welcome to the APSI San Gabriel, at Gabrielino High School, located in the heart of the San Gabriel Valley. This College Board endorsed Advanced Placement Summer Institute offers practiced presenters, up-to-date College Board materials, proven classroom strategies all at a state of the art high school campus setting. Additionally, you will have a chance to network with other educators who teach in varied and diverse classroom settings; from single high school districts to the second largest district in the nation, as well as teachers from American schools abroad. We offer a continental breakfast with healthy offerings, and serve a variety of local cuisines during our lunches. We will do everything we can to accommodate your dietary needs.

The APSI San Gabriel has its root embedded in College Board and Advanced Placement. The original directors, Claire and Chuck Pelton, taught AP English in Palo Alto, California for more than 4 decades.  After Claire left the classroom, she worked as the Educational Director for the College Board’s Western Regional Office. After this, she and Chuck started running their Summer institute. The Pelton’s eventually moved their event to Gabrielino High School, knowing that the principal, a former AP US History teacher, reader, presenter, and former Educational Manager for the WRO understood the value of helping new and experienced AP teachers prepare students. Her husband, a former Pre-AP Math presenter, served as the event manager. Several years ago, after losing her beloved Chuck, Claire finally decide to retire, she entrusted the summer institute to her manager, Paul Heinrich, who continues the Pelton tradition of offering AP teachers the highest quality professional development.

Paul has taught mathematics in the San Gabriel Valley for over 30 years. He currently teaches mathematics in the El Monte Union High School District, where he also serves as a math curriculum coordinator and department chair. In addition to working with Claire as the institute’s manager, Paul was a pre-AP consultant and content developer for the College Board.