Below Average
#3064 of 3,177 private schools in CA
Justin-siena
High School
4026 Maher Street, Napa, CA 94558
About Justin-siena
Justin-siena is a private high school in Napa, CA 94558. The school serves approximately 679 students in grades 9th – 12th with a student-teacher ratio of 17.4:1. It holds a MySchoolScout rating of 4.5/10, placing it in the 3.6th percentile among private schools in CA — an average rating overall.
Located in a neighborhood with a median household income of $109,444, where 38% of adults hold a bachelor's degree or higher.
Compare to Public Schools
BetaHow Justin-siena compares to 7 public schools serving similar grades in Napa, CA
Nearby High Schools
| School | Rating |
|---|---|
| Justin-siena (this school) | 4.5 |
| Vintage High | 5.5 |
| Valley Oak High | 5.3 |
| Napa Valley Independent Studies | 4.5 |
| Napa High | 3.1 |
| New Technology High | 4.1 |
| Napa County Juvenile Hall/Court | 4.5 |
| Napa County Community | 4.9 |
Demographics sourced from NCES Private School Survey (PSS) and Common Core of Data (CCD). Comparisons are based on enrollment-weighted averages.
Score Breakdown
What This Rating Measures
This rating reflects classroom size, instructional time, student diversity, community resources, and school characteristics. Private schools are ranked against other private schools in CA.
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Score basis: Private school model
Data coverage: 45% of scoring components had data
Components scored: 2 of 5
Ranking pool: Private schools in CA
Test Scores
Test score data not yet available for this school.
Location
4026 Maher Street, Napa, CA 94558
Nearby Schools
20 within 1.4 mi| School | Distance | Rating |
|---|---|---|
| JUSTIN-SIENA Napa | 0.1 mi | 4.5 |
| Northwood Elementary Napa | 0.3 mi | 6.1 |
| Hopewell Baptist Christian Academy Napa | 0.4 mi | 4.5 |
| NAPA MONTESSORI CHILDREN'S HOUSE INC. Napa | 0.6 mi | 4.5 |
| ST JOHN'S LUTHERAN SCHOOL Napa | 0.6 mi | 4.5 |
| St. John's Lutheran Elementary Napa | 0.6 mi | 4.5 |
| ST APOLLINARIS SCHOOL Napa | 0.5 mi | 4.5 |
| St. Apollinaris Elementary School Napa | 0.5 mi | 4.5 |
| Redwood Middle Napa | 0.6 mi | 4.7 |
| Unidos Middle Napa | 0.7 mi | 3.3 |
| Willow Elementary Napa | 0.7 mi | 6.2 |
| Kolbe Academy and Trinity Prep Napa | 0.8 mi | 4.5 |
| La Sagrada Familia Catholic International Home School Academy Napa | 0.9 mi | 4.5 |
| KOLBE ACADEMY & TRINITY PREP Napa | 0.9 mi | 4.5 |
| Pueblo Vista Elementary Napa | 1.0 mi | 4.4 |
| Bel Aire Park Elementary Napa | 0.8 mi | 3.4 |
| Vintage High Napa | 0.9 mi | 5.5 |
| Sunrise Montessori of Napa Valley Napa | 1.2 mi | 4.5 |
| SUNRISE MONTESSORI OF NAPA VALLEY Napa | 1.2 mi | 4.5 |
| West Park Elementary Napa | 1.4 mi | 2.3 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 94558 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$109,444
Median Home Value
$855,600
Median Rent
$2,248/mo
Population
64,552
College Educated
38.3%
Homeownership
67.3%
Avg Commute
23.6 min
Poverty Rate
8.5%
Median Age
44.5
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Cesar E. Chavez Lrng Acads-Acad of Scientific Explr (ASE) San Fernando, CA | 4.5 |
| Head-Royce School Oakland, CA | 4.5 |
| JUSTIN-SIENA Napa, CA | 4.5 |
| Samueli Academy Santa Ana, CA | 4.5 |
| School of Arts and Enterprise Pomona, CA | 4.5 |
| School of Engineering & Sciences Sacramento, CA | 4.5 |
Frequently Asked Questions
Common questions about Justin-siena
What grades does Justin-siena serve?
Justin-siena serves students in grades 9th through 12th.
How many students attend Justin-siena?
Justin-siena has an enrollment of approximately 679 students.
What is the student-teacher ratio at Justin-siena?
The student-teacher ratio at Justin-siena is 17.4:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.
How does Justin-siena rank in CA?
Justin-siena is ranked #3064 out of 3,177 private schools in CA.
What is Justin-siena's MySchoolScout rating?
Justin-siena has a composite rating of 4.5 out of 10 on MySchoolScout. This score combines academic performance, student growth, equity, and school environment into a single score.
Is Justin-siena a private school?
Yes, Justin-siena is a private coeducational school. Private schools are not required to participate in state standardized testing, so academic performance data may be limited compared to public schools.
Explore More Schools
Quick Facts NCES PSS (SY 2024-25)
- Grades
- 9th – 12th
- Enrollment
- 679
- Student-Teacher Ratio
- 17.4:1
- Teachers (FTE)
- 39
- Type
- private
- Coed Status
- coed
- County
- Napa
- Phone
- (707) 255-0950
- Data Year
- 2025–2026
Resources & Links
How We Rate Schools
Our ratings combine academic performance, growth, equity, and school environment into a single 1-10 score using publicly available data.
Read our methodology