Erin Gallawa

Erin Gallawa joined the Christian Brothers faculty in August 2025. She holds a B.A. in Theology & Religious Studies and Political Science from University of San Diego and a M.A. in Curriculum & Instruction from California State University, Sacramento.

Alonzo Aguillio ’20

Alonzo Aguillio joined the Christian Brothers High School faculty in 2025 as a a mathematics and engineering teacher. He holds a bachelor’s degree from California State University Chico in CAGD (computer animation and game design) with an applied computer graphics minor and psychology with a child development minor. He is Project Lead the Way (PLTW) Engineering certified and serves as the robotics team coach. Mr. Aguillio graduated from Christian Brothers High School in 2020.

Monique Judge

ENGLISH TEACHER English Department, Faculty and Staff

Gretchen Tournabene

Gretchen Tournabene joined Christian Brothers in 2025 as an English teacher. She hold a bachelor’s degree from Amherst College in English, a Master’s Degree from San Diego State University in American Literature, and a teaching credential from National University. Ms. Tournabene played field hockey and ice hockey in college and still plays ice hockey. She is the proud parent of 3 kids (1 current Falcon and 2 future Falcons).

Isabel Aquino

Isabel Aquino joined Christian Brothers High School in August 2025. She holds a B.S. in Biology from University of the Pacific and a single subject California Teaching Credential in Biological Sciences from San Francisco State University. Ms. Aquino has been in Catholic education for over 20 years.

Alicia Sims

Accounting Associate Business Office, Faculty and Staff

David Chavez, CPA

Chief Financial Officer Business Office, Faculty and Staff

Nick Hicks

Nick Hicks joined the CB Athletics Department in 2024 as the school’s Game Day Coordinator.

Michael Dion

Michael Dion joined the CB faculty in 2024.