About Us

Born of a collaboration between the Dominican Sisters of San Rafael and the De La Salle Christian Brothers, Justin-Siena has served families in the Napa Valley and beyond since 1966. Although firmly rooted in Napa, we are part of a Lasallian ministry that spans continents, centuries, and generations. 

We celebrate our Lasallian Catholic heritage as an independent college preparatory school. We serve as sisters and brothers to our students, celebrate God's holy presence, and commit ourselves to ensuring access to those who seek this experience.