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#1236 of 1,787 private schools in CA

Justin-siena

High School · Napa, CA

A private high school in Napa, CA serving grades 9th – 12th.

Private

4026 MAHER ST, Napa, CA 94558

  • 13.8:1 student-teacher ratio

Academics

Preliminary

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.

Classroom Attention
?Student-teacher ratio calibrated against other private schools. Lower ratios mean more individual attention. (30% of overall score)
B-5.1 / 10
View breakdown
Student-Teacher Ratio13.8:1
Instructional Commitment
?Total annual instructional hours based on school day length and days per year. (15% of overall score)
C3.0 / 10
View breakdown
School Day Length6.2 hours
Annual Instructional Hours1,085
Diversity & Inclusion
?Racial and ethnic diversity of the student body using Simpson's diversity index. (20% of overall score)
A8.9 / 10
View breakdown
Diversity Index70%
Community Context

Data not available

School Profile
?Enrollment size and grade span breadth — indicators of program depth and peer community. (15% of overall score)
B5.5 / 10
View breakdown
Enrollment601
View data sources

Score basis: Private school model

Data coverage: 80% of scoring components had data

Components scored: 4 of 5

Ranking pool: Private schools in CA

Test scores

Most recent published year. School vs. CA average.

Test score data not yet available for this school.

How we rate schools

A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.

See how we rate

The neighborhood

Where Justin-siena sits, and what the surrounding area looks like.

Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries.

Getting around & local context

  • Walk 42Car-Dependent
  • Transit 26Some Transit
  • Bike 67Bikeable
  • City Safety: High1,705/100K

Powered byWalk Score

FBI Uniform Crime Reporting · 2024 · city context (Napa), not school-level safety or attendance eligibility. Source details

Source period: 2024. Freshness not available.

Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)

Median income

$109,444

Median home value

$855,600

Median rent

$2,248/mo

College educated

38.3%

Homeownership

67.3%

Poverty rate

8.5%

ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 94558; this is area context, not an attendance boundary.

Programs & students

Student demographicsNCES Private School Universe Survey (PSS) (SY 2021–22)

White46.3%
Hispanic20.1%
Two or More17.1%
Asian12.3%
Black3.2%
Native American0.8%
Pacific Islander0.2%

Source: NCES Private School Universe Survey (PSS)

Compare nearby

Nearby same-level schools

4 from a 5-mile search

SchoolScoreGradesDistanceEnrollmentCompare
Justin-sienaPrivate · tuitionNot rated9–120.1 mi679Compare →
Hopewell Baptist Christian AcademyPrivate · tuitionNot rated2–120.5 mi24Compare →
La Sagrada Familia Catholic International Home School AcademyPrivate · tuitionNot ratedK–120.8 mi28Compare →
Kolbe Academy & Trinity PrepPrivate · tuition5.2K–120.9 mi150Compare →

Distance is proximity only; it is not attendance eligibility.

Private · tuition: Potential private option; tuition and admission requirements have not been verified.

Justin-siena is listed in Napa, CA; verify the current enrollment path directly.

About Justin-siena

Justin-siena is a private high school in Napa, CA, serving approximately 601 students in grades 9th-12th with a 13.8:1 student-teacher ratio. It holds a MySchoolScout rating of 5.7 out of 10 and ranks #1,236 of 1,787 private schools in CA.

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 601 students.

What is the student-teacher ratio at Justin-siena?

The student-teacher ratio at Justin-siena is 13.8:1. 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 ranks #1,236 of 1,787 private schools in CA.

What is Justin-siena's MySchoolScout rating?

Justin-siena has a current MySchoolScout rating of 5.7 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.

Is Justin-siena a private school?

Yes, Justin-siena is a private coeducational school with a Roman Catholic affiliation. Private schools are not required to participate in state standardized testing, so academic performance data may be limited compared to public schools.

Is Justin-siena a religious school?

Justin-siena has a Roman Catholic religious affiliation.

School factsNCES Private School Universe Survey (PSS) (SY 2021–22)

Grades
9th – 12th
Enrollment
601
Gender Split
48% M / 52% F
Student-Teacher Ratio
13.8:1
Teachers (FTE)
44
Type
private
Coed Status
coed
Affiliation
Roman Catholic
School Day
6.2 hours
Days Per Year
175 days
Setting
Small City
County
Napa County
Area population (ZIP 94558)
64,552
Area average commute
23.6 min
Area median age
44.5
About this school's data

Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.

School directory (enrollment, grades, staff, contact)
NCES Private School Universe Survey (PSS) · SY 2021–22 · Low confidence
  • Vintage not available. Do not use this measure alone.
MySchoolScout rating and rank
MySchoolScout ranking model · Low confidence
  • Vintage not available. Do not use this measure alone.
  • Available for part of the eligible units; results may not represent the full area.
  • Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
Neighborhood (income, housing, education)
U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
  • Older source: ACS 2019–2023 5-year estimates. Use as historical context.
  • Reported for the ZCTA for ZIP 94558; this does not measure the attendance area.

Evidence periods: Rating mixed/unknown input periods; assessments vintage unavailable; directory SY 2021–22

About our data · How we calculate scores

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