Justin-Siena High School

4026 Maher St
Napa, CA 94558-0945
Tel: (707)255-0950
Grades: 9-12 | 672 students
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.
Faculty and staff strive to serve a diverse ethnic and socio-economic cross-section of the surrounding communities.
Parents are invited and expected to enter into partnership in both the responsibilities and the benefits of Justin-Siena's educational experience so that the school experience can effectively complement and build on the primary education that begins in and is sustained by the home environment.
God is revealed and found in many religions; but as a Catholic school, Justin-Siena adheres to the revelation of God found in the tradition and institutions of the Roman Catholic Church.
Students and teachers are united through their participation in the process of Catholic education and by common faith in the Gospel.
This unity is expressed in daily relationships and participation in religious activities.
The curriculum is directed primarily toward those students who intend to continue their education beyond the secondary level.
Courses in the curriculum are designed to provide knowledge in a variety of basic disciplines, skills for clearer communications, heightened awareness of political and social concerns, personal and spiritual growth and encouragement in creative expression.

School Overview

School Membership(s)School Assoc. National Catholic Educational Association (NCEA)
Other religious school association(s)
National Association of Independent Schools (NAIS)
Western Association of Schools and Colleges (WASC)
National Association of College Admissions Counselors
Religious Affiliation Roman Catholic
Grades Offered Grades 9-12
Learning Difference Programs Yes
Year Founded 1966

Student Body

Total Students 672 students
Student Body Type Co-ed
% Students of Color
State avg.: 44%
Students by Grade Justin-Siena High School Student By Grade

Academics and Faculty

Total Classroom Teachers 58 teachers
Student : Teacher Ratio 12:1
National avg.: 13:1
% Faculty w/Advanced Degree
Average Class Size 24 students
Number of AP Courses 22 courses
List of Courses Offered Link to List of Courses
Advanced Courses AP Art History, AP Biology, AP Calculus AB, AP Calculus BC, AP Computer Science, AP English Language Literature, AP Environmental Science, AP Government, AP Language, AP Physics, AP Spanish, AP United States History, Pre AP English Language and Literature
Average SAT score 1688
Average ACT score 25
Matriculation DataMatric. Data Link to Matriculation Data
Classroom Dress Code Formal
(Students must wear a collared shirt.)

Finances and Admission

Admission Deadline Dec. 21 / Feb. 1
Yearly Tuition Cost $15,500
Tuition Notes The tuition packages is inclusive of most significant fees that Justin-Siena has typically charged families throughout the year. The following fees will no longer be assessed: student life, athletics, theatre, retreats, yearbook, or graduation.
% on Financial Aid
Average Financial Aid Grant $7,750
Acceptance Rate
National avg.: 85%
Admissions Director Alicia Valdivia


Total Sports Offered 16 sports
Sports Baseball, Basketball, Cheering, Cross Country, Dance, Football, Golf, Lacrosse, Soccer, Softball, Swimming, Tennis, Track and Field, Volleyball, Water Polo, WrestlingBaseballBasketball,
CheeringCross Country,
Track and FieldVolleyball,
Water PoloWrestling,
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School Reviews

5.0 Stars   09/01/16
I am from Shanghai China. My husband and I are both baptised, we believe in God. We want to send our son Kevin to your school. Does Justin-Siena High School is a boarding school?
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The average private school tuition in Napa County, CA is $8,152 for elementary schools (read more about average private school tuition across the country).