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Admissions

Visiting & Applying

Join us for a Tour!

JSHS VIRTUAL TOUR from Justin-Siena on Vimeo.

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 and Parent Talk & Tour visits. Led by our Student Ambassadors, and scheduled September–December, these visits offer a comprehensive experience for prospective families.

Don't see a date that works for you? You may also contact us for a private campus tour. 

APPLYING

Admissions Application
  • Please click here for the admissions application
  • Applications are due December 20, 2025
  • Applications submitted after December 20 will go to the waitlist
  • Submit Tuition Assistance Application (if necessary) by January 31, 2026
  • Submit Merit-based Scholarship Application by January 31, 2026

Entrance Exam
  • Sign up to take the Entrance Exam on December 6, 13, 19, and 22.  Space is limited for each session.
Admissions Interview
  • Upon receipt of your Admissions Application, you will be schedule your family interview January 10 or 24
Admission Decisions
  • Will be mailed beginning February 20, 2026
Say “Yes!”
  • Registration is due by March 6, 2026

Student FAQ's

For more information, please contact

List of 3 members.

  • Photo of Alicia Valdivia

    Alicia Valdivia 

    Vice President for Enrollment Management; 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 Jeremy Tayson

    Jeremy Tayson 

    Admissions & Communications 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 people in grades 9–12.