High school is a transformative time that can set the tone for the rest of your life. Dare to become who you were made to be!
At Justin-Siena, students are nurtured and challenged to become the best version of themselves and to truly realize their full potential.
Our students learn and grow in an inclusive community of faith, representing a 300-plus-year Lasallian tradition of respect, welcome, and hospitality that makes it easy to “be you.”
Our students have different passions, gifts, personalities, and backgrounds. In their diversity, our students have some things in common: they love each other, and they love their school. They are ALL HEART.

List of 8 items.

  • 20

    Average Class Size
  • $3.8 mil

    Tuition assistance given annually
  • 17

    Service Immersion and Retreat Trips
  • $10 mil

    Scholarships earned by the Class of 2021
  • 600

  • 55%

    Students receiving tuition assistance
  • 33

    Athletic Teams
  • 12:1

    Student-Staff Ratio


Come Visit Us!

The best way to experience all Justin-Siena has to offer is to come visit. We look forward to welcoming you soon!

Justin-Siena High School

4026 Maher Street
Napa, CA, 94558
United States
T: 707.255.0950 
F: 707.255.0334

"Sempre Avanti"

Justin-Siena is a Lasallian Catholic college preparatory community that serves young people in grades 9–12.