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Rancho Cucamonga High School
(909) 989-1600
7:30-4:00 M-F

Administration Office

RCHS Administration

Mr. Cary Willborn
Email: cary.willborn@cjuhsd.net
Jill Snyder, Administrative Secretary
Ms. Joni Siegel
Assistant Principal of Instruction
Email: joni.siegel@cjuhsd.net
Gina Rodriquez, Instruction Secretary
Mr. Rick Gundrum
Assistant Principal of Achievement
Email: richard.gundrum@cjuhsd.net
Tammy Mayer, Achievement Secretary
Mr. Colby Helper
Assistant Principal of Educational Services
Email: colby.helper@cjuhsd.net
Stacy Ransdell, Educational Services Secretary
Mr. Jeremy Hansen
Assistant Principal of Discipline
Email: jose.rangel@cjuhsd.net
Monica Sierra, Discipline Secretary

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Gundrum, Richard (909) 989-1600 ex.2024 Assistant Principal of Achievement
Hansen, Jeremy (909) 989-1600 ex.2030 Assistant Principal of Discipline
Helper, Colby (909) 989-1600 ex.2026 Assistant Principal of Ed Services
Mayer, Tammy Achievement Secretary
Rodriquez, Gina Instruction Secretary
Siegel, Joni (909) 989-1600 ex.2022 Assistant Principal of Instruction
Sierra, Monica (909) 989-1600 ex.2030 Discipline Secretary
Snyder, Jill Administrative Secretary
Willborn, Cary (909) 989-1600 ex.2020 Principal