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About

Leadership

Leadership Team

List of 1 members.

  • Photo of Matthew D. Powell

    Matthew D. Powell 

    Justin-Siena
    President
    707.255.0950 ext. 641
    University of Portland - B.A.
    2022

List of 1 members.

  • Photo of Joe Welling

    Joe Welling 

    Justin-Siena
    Principal
    707.255.0950 ext. 768
    Xavier University - B.S.
    St. Mary's University of Minnesota - M.A.
    2023

List of 1 members.

  • Photo of Kate Bock

    Kate Bock 

    Justin-Siena
    Director of Human Resources
    707.255.0950 ext. 766
    Western Washington University - B.S.
    2023

List of 1 members.

  • Photo of Andrea Flores

    Ms. Andrea Flores 

    Justin Siena High School
    Vice President for Advancement
    707.255.0950 ext. 610
    University of Oregon - B.A.
    University of Washington - MPA
    2014

List of 1 members.

  • Photo of Alma Gallegos, M.Ed.

    Ms. Alma (Cortez-Lara) Gallegos, M.Ed. 

    Justin Siena
    Assistant Principal; Director of LEAP
    707.255.0950 ext. 526
    Pepperdine University - M.A.
    University of California, Santa Barbara - B.A.
    2011

List of 1 members.

  • Photo of Alicia Valdivia

    Mrs. Alicia Valdivia 

    Justin Siena High School
    Vice President for Enrollment Management; Instructor of Social Studies
    707.255.0950 ext. 621
    Sonoma State University - B.A
    Chapman University - M.A.
    2005

Justin-Siena High School

4026 Maher Street
Napa, CA, 94558
United States
T: 707.255.0950 
F: 707.255.0334
Justin-Siena is a Lasallian Catholic college preparatory community that serves young people in grades 9–12.