Amerigo Napa Valley Justin-Siena High School

4026 Maher St.
Napa, CA 94558
Amerigo Napa Valley Justin-Siena High School Photo #1 - Amerigo Napa Valley partners with Justin-Siena High School to provide boarding students with a premier university-preparatory education.
Amerigo Napa Valley Justin-Siena High School Photo #2 - Amerigo Napa Valley students are expertly cared for by a professional residential life staff.
Amerigo Napa Valley Justin-Siena High School Photo #3 - Students live and learn on a 40 acre, park-like campus just minutes from downtown Napa and a short drive from San Francisco.
Amerigo Napa Valley Justin-Siena High School Photo #4 - Justin-Siena has a thriving, award-winning, Theatre program that produces over five productions each year.
Amerigo Napa Valley Justin-Siena High School Photo #5 - Each student resident living in the on-campus boarding house enjoys his or her own room with closet and sink.
Amerigo Napa Valley Justin-Siena High School Photo #6 - Each resident enjoys his or her own room with closet and sink.
Amerigo Napa Valley Justin-Siena High School Photo #7 - Over 80% of our students participate in Athletics. We have a certified Athletic Trainer on staff full-time to keep our students safe.
Amerigo Napa Valley Justin-Siena High School Photo #8 - Community is important. Our students have many opportunities to build community through service, retreats, homecoming, sports, clubs, and activities.
Amerigo Napa Valley Justin-Siena High School Photo #9 - Justin-Siena offers 29 AP, Honors, and Advanced courses, Engineering, Arts, and elective choices.
Amerigo Napa Valley Justin-Siena High School Photo #10 - Teacher make a lasting impact on students lives providing top-quality academics and teaching life lessons to prepare students for success in life at university and beyond.
  • Justin-Siena is a Catholic high school in the Lasallian tradition called to provide educational excellence in a loving, Christ-centered community that prepares students to serve and to lead in an ever-changing world.

Top 20 Placements

Amerigo Napa Valley Justin-Siena High School is listed among the top 20 boarding schools (out of 314 schools) for:

Definition of Terms
 | 2019 School Data
Amerigo Napa ValleyBoarding School Avg.
School FocusCollege PrepCollege Preparatory
Grades Offered9-129-12
School TypeCo-edCo-ed
Religious AffiliationCatholicNon-denominational
Year Founded19661909
Campus Size40 acres120 acres

Student Body

Enrollment580 students320 students
% Students of Color
% International Students
% Students Boarding
Average SAT Score1140* National Avg. »View
Average ACT score25*National Avg. » View
Offers Post-Grad YearNoNo

Academics and Faculty

Saturday ClassesNoNo
Classroom Dress CodeFormal
(Uniform polo shirt, uniform skirt and shorts, jeans, khaki colored pants)
Average Class Size20 students12
*National School Avg. » 20
Teacher : Student Ratio1:121:7
# of AP / Advanced Courses Offered2918
ESL Courses OfferedYesYes
% Faculty with Advanced Degree
Summer Program OfferedNoYes


Yearly Tuition
(Boarding Students)
(Tuition, room, board, activities and programs)
Yearly Tuition
(Day Students)
Merit Scholarships OfferedYesNo


Application DeadlineNone / RollingJan. 15
SSAT RequiredNoYes
Acceptance Rate
Director of AdmissionsRaj Patel

Course Listings

List of Courses OfferedLink to List of Courses

AP / Advanced Courses

# of AP / Advanced Courses Offered2918
CoursesAdvanced Choral, Advanced Dance, Advanced Instrumental Music, Advanced Studio Art, Advanced Theater, AP American Government, AP Art History, AP Biology, AP Calculus AB, AP Calculus BC, AP Chemistry, AP Computer Science, AP Economics, AP English Language, AP English Literature, AP Micoeconomics, AP Physics, AP Spanish, AP Studio Art, AP United States History, AP World History, Honors Algebra II, Honors Chemistry, Honors English 11, Honors English 12, Honors English Language Literature, Honors Geometry, Honors Physics, Honors Pre Calculus, Honors Spanish II, Honors Spanish III, Pre AP English Language and Literature


# Interscholastic Sports Offered1616
SportsBaseball, Basketball, Cheering, Cross Country, Dance, Football, Golf, Lacrosse, Soccer, Softball, Swimming, Tennis, Track and Field, Volleyball, Water Polo, Wrestling


Total Extracurricular Organizations2224
ExtracurricularsClub or Organization:
Amnesty International Club, Culinary Club, Ecology Club, Fashion Club, FIRST LEGO Robotics, French Club, Friday Night Live, Government Club, Italian Club, Key Club, Literary Magazine, Medical Futures Club, Mock Trial, Multicultural Club, National Art Society, National Honor Society, Outdoor Club, Ping Pong Club, Spanish Club, Student Ambassadors, Student Council, Think Pink

College Matriculation

Year: 10 Most Popular College Choices  (# Enrolled)
Link to Matriculation Data

School Notes

  • Justin-Siena is a Catholic, college preparatory high school in the Lasallian tradition which serves approximately 575 young men and women in grades 9 - 12. The School is located on forty acres in the City of Napa and in the Diocese of Santa Rosa. The school is accredited by the Western Association of Schools and Colleges (WASC) and the Western Catholic Education Association (WCEA). Justin-Siena serves a variety of students from Napa, Sonoma, and Solano Counties.
  • In 1966 two schools opened on adjacent campuses--Justin High School (for boys) sponsored by the De La Salle Christian Brothers and Siena High School (for girls) sponsored by the Dominican Sisters of San Rafael.  The schools merged in 1972 and were co-sponsored until the end of the 2005-06 school year when the Dominican Sisters transferred their sponsorship to the De La Salle Christian Brothers.  Justin-Siena High School continues today as part of a world-wide network of almost a thousand Lasallian schools found in 84 countries.The School is administered by a President and Principal and is staffed by a dedicated community of De La Salle Christian Brothers, Dominican Sisters of San Rafael, and lay men and women. Justin-Siena`s boarding program receives students 9th through 12th grade. The Boarding Program is located in a beautiful home on the north side of campus and is comprised of domestic and international students from around the globe. The house, which can house up to 28 students, has private rooms for each student. Students who reside in the Justin-Siena Boarding Program will experience:
  • A safe home with on-going adult supervision Home cooked dinners Weekend excursions with transportation English language support program Wireless internet access Academic support and resources On-site laundry facility Swimming pool
  • Amerigo Napa Valley Justin-Siena High School accreditations: Western Association of Schools and Colleges (WASC), Western Catholic Education Association (WCEA), National Association of Independent Schools (NAIS)
  • Sample of notable school alumni/alumnae:
    • Josh Jackson - #4 NBA draft pick to Phoenix Suns
    • Brett Wallace - Professional MLB player
    • Olivia O'Brien - Singer, songwriter, Billboard Top 10
Show me:
  • School Location Miles Grades Students
  • Grades: 9-12

    6-12 (day)
     | 517 students
    39.9 miles2100 Mt. Diablo Scenic Blvd.
    DanvilleCA 94506

    6-12 (day)
  • Grades: 9-12

    Pre-K-12 (day)
     | 750 students
    122.4 miles3152 Forest Lake Road
    Pebble BeachCA 93953

    Pre-K-12 (day)
  • Grades: 9-12, PG | 100 students 318.2 miles8585 Ojai Santa Paula Road
    OjaiCA 93023
    318.29-12, PG100
  • Grades: 9-12

    6-12 (day)
     | 249 students
    282.6 milesP.O. Box 98, 2555 W. Highway 154
    Los OlivosCA 93441

    6-12 (day)
  • Grades: 9-12 | 110 students 375.2 miles41 W Santa Clara St.
    ArcadiaCA 91007
Recent Articles
Four reasons shaped our decision. I share these and other insights with you.
Does your son or daughter ride? Are you thinking about finding a private school which will suit both your academic requirements and your child's penchant for riding? Let's look at a couple of schools with riding programs.
What are you allowed to bring to boarding school? What are you not allowed to bring to boarding school? Answers to those questions and more.
Featured Schools
Request Information
I am a:
Name of parent:
Student First name:
Student Middle name:
Student Last name:
Student date of birth:
Country of Citizenship:
Student is:
Currently in grade:
Seeking entry for grade:
Target start date:
Name of current school:
School type:
Applying for financial aid?:
Please describe academic, athletic, and extracurricular interests of the student.:

(enter "N/A" if not applicable)