Meet our Faculty

Meet our Faculty & Staff

Justin-Siena is home to an extraordinary group of committed faculty and staff who care deeply about our students. Our teachers encourage and set high expectations not only for Justin-Siena students but also for each other. We recognize that mastery of our craft is a career-long process, one that Justin-Siena generously supports through professional development opportunities, a mentoring program for new faculty, tuition assistance for higher degrees, and other programs that support ongoing learning for our faculty. Learn why our faculty love their craft and their students below. 

Faculty & Staff Directory

For more information, contact

List of 1 members.

  • Photo of Robyn Harrison

    Robyn Harrison 

    Vice President for Academic Affairs & Instructor of English
    707.255.0950 ext. 735

List of 4 items.

  • Chris Fidler '02

    Instructor of Engineering and Science
    Science Department Chair

    "I loved being part of this community as a student here, and it feels great to be able to continue to contribute to that community as a teacher."
  • Marisa Bartalotti

    Director of Counseling

    "I see students show gratitude every day. They are incredibly thankful for the adults who help them on their high school journey and they appreciate their teachers and the hard work they do."
  • Alicia Valdivia

    Director of Admissions
    Instructor of Psychology

    "I am lucky to get to know our students when they are in middle school and see them grow into young adults. Watching this growth is inspiring. As a Psychology instructor, I love being able to pass my love for the subject onto my students."
  • Sarah Goble

    Athletic Trainer

    "I love getting to work with the student-athletes on and off the field. Helping those that are injured return to their sport and teaching students the ins and outs of sports medicine and athletic training."

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 men and women in grades 9–12.