Visiting & Applying

Join us for a Tour!

Brave for a Day

Want to see ALLHEART in action? We invite you to visit Justin-Siena High School through our Brave for a Day Program. These visits, led by our student ambassadors, are scheduled September–January and offer a comprehensive experience for prospective families. We can meet your needs with in-person and virtual options!


Complete the Online Admission Application
  • Please click here for the 2021-2022 school year admissions application.
  • Early Decision applications due December 15, 2020.
  • Regular Decision applications due January 24, 2021.
  • Late Decisions application accepted on a rolling basis after January 24, 2021, please call the Admissions Office for more details. 
  • Submit Tuition Assistance Application (if necessary) Due January 31, 2021.
  • Submit Merit Based Scholarship Application (if desired) Due January 31, 2021.
Admissions Interview
  • Once the Admissions Application has been submitted, the admission office will contact you to schedule your family interview.
  • Admissions Interviews will be January 23 and February 6.
Receive Your Admission Decision
  • Early Decision beginning February 12, 2021.
  • Regular Decision beginning March 1, 2021.
Say “Yes!”
  • Early decision register online by February 26, 2021.
  • Regular decision register online by March 15, 2021.

Student FAQ's

For more information, please contact

List of 4 members.

  • Photo of Alicia Valdivia

    Alicia Valdivia 

    Director of Admissions; Instructor of Social Studies
    707.255.0950 ext. 621
  • Photo of Megan Dominici

    Megan Dominici 

    Director of Outreach
    707.255.0950 ext. 591
  • Photo of David Granucci

    David Granucci 

    Outreach Associate/Head Boys Basketball Coach
    707.255.0950 ext. 730
  • Photo of Jeremy Tayson

    Jeremy Tayson 

    Interim Director of Communications; Admissions Associate; Head Baseball Coach
    707.255.0950 ext. 734

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.