Justin-Siena High School Photo

Best Napa County Private High Schools (2026)

For the 2026 school year, there are 10 private high schools serving 2,977 students in Napa County, CA.
The top-ranked private high schools in Napa County, CA include Justin-Siena High School, St. Helena Montessori School And Farm, and Napa Christian Campus Of Education.
The average acceptance rate is 98%, which is higher than the California private high school average acceptance rate of 78%.
90% of private high schools in Napa County, CA are religiously affiliated (most commonly Baptist and Catholic).

Top-Ranked Napa County Private High Schools (2026)

School
Location
Quick Facts
Justin-Siena High School
Justin-Siena High School Photo
(Catholic)
(1)
4026 Maher St
Napa, CA 94558
(707) 255-0950
Gr: 9-12 | 660 students Avg. class size: 24 students Sports: 16 | Extracurrculars: 11 Tuition listed
Kolbe Academy
Kolbe Academy Photo - Kole Academy is an authentically Catholic and customizable home education. Our programs allow parents to tailor your children's formation in the Catholic tradition, with a classical approach.
Alternative School (Catholic)
1600 F Street
Napa, CA 94559
(707) 255-6499
Gr: PK-12 | 1,597 student Tuition listed
Napa Christian Campus Of Education
Napa Christian Campus Of Education Photo
(Seventh Day Adventist)
2201 Pine St
Napa, CA 94559
(707) 255-5233
Gr: K-12 | 148 students Avg. class size: 20 students Sports: 3 | Extracurrculars: 2 Tuition & acceptance rate listed
St. Helena Montessori School And Farm
St. Helena Montessori School And Farm Photo - St. Helena Montessori 880 College Ave. St. Helena Ca. 94574
Montessori School
880 College Avenue
Saint Helena, CA 94574
(707) 963-1527
Gr: PK-12 | 266 students Avg. class size: 20 students Sports: 4 | Extracurrculars: 3
Calvary Baptist Christian Academy
(Baptist)
117 Theresa Ave
American Canyon, CA 94503
(707) 642-1143
Gr: K-11 | 56 students
Calvary Christian Academy
(Christian)
2645 Laurel Street
Napa, CA 94558
(707) 252-2191
Gr: PK-9 | 10 students Avg. class size: 15 students Tuition listed
Grace Academy Of Napa Valley
(Baptist)
3765 Solano Ave
Napa, CA 94558
(707) 255-4033
Gr: K-12 | 34 students
Hopewell Baptist Christian Academy
(Baptist)
3755 Linda Vista Ave
Napa, CA 94558
(707) 252-0322
Gr: K-12 | 38 students Sports: 2 Tuition listed
Kolbe Academy & Trinity Prep
(Catholic)
2055 Redwood Rd.
Napa, CA 94558
(707) 258-9030
Gr: K-12 | 162 students Avg. class size: 15 students Tuition listed
New Life Academy
(Pentecostal)
2625 1st St
Napa, CA 94558
(707) 255-1062
Gr: 8-12 | 6 students
[+] Show Closed Private Schools in Napa County, California

Napa County Private Schools (Closed)

School
Location
Quick Facts
Aldea School (Closed 2015)
Special Education School
4002 Jefferson St
Napa, CA 94558
(707) 224-5510
Gr: 7-12 | 10 students
2800 Jefferson St. Suite 7
Napa, CA 94558
(707) 889-0190
Gr: 1-12 | 123 students Tuition listed
The Oxbow School (Closed 2024)
Special Program Emphasis
530 3rd Street
Napa, CA 94559
(707) 255-6000
Gr: 10-12 | 45 students Avg. class size: 15 students Tuition listed
983 Napa St
Napa, CA 94559
(707) 224-8388
Gr: K-8 | 130 students

Overview

This County (Napa County)
This State (CA)
# Schools
10 Schools

Student Body:

# Students
2,977 Students
274,993 Students
% Average Students of Color
25%
49%

Academics and Faculty:

# Teachers
151 Teachers
26,842 Teachers
Average Student-Teacher Ratio
20:1
10:1
% Average Faculty w/Advanced Degree
42%
61%
Average Class Size
19 students
15 students
Average Number of AP Courses
21 courses
15 courses
Average SAT score
1170
(Out of 1600)
1263
Average ACT score
28
(Out of 36)
27

Tuition and Acceptance Rate:

Average Yearly Tuition Cost
$11,471
$23,319
Average % on Financial Aid
38%
33%
Average Financial Aid Grant
$12,250
$12,687
Average Acceptance Rate
98%
78%

Students by Ethnicity:

0.42
0.73
# American Indian Students
16 Students
1,844 Students
% American Indian Students
1%
1%
# Asian Students
125 Students
35,016 Students
% Asian Students
4%
13%
# Hispanic Students
332 Students
43,321 Students
% Hispanic Students
10%
16%
# Black Students
92 Students
15,944 Students
% Black Students
3%
6%
# White Students
2,393 Students
115,902 Students
% White Students
75%
44%
# Hawaiian Students
28 Students
2,957 Students
% Hawaiian Students
1%
1%
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
187 Students
49,014 Students
% of Others Students
6%
19%
All Ethnic Groups

Extracurriculars and Sports:

Average Number of Extracurriculars
5 extracurriculars
14 extracurriculars
Average Number of Sports
6 sports
10 sports

Frequently Asked Questions

What are the top-ranked private high schools in Napa County, CA?
The top-ranked private high schools in Napa County, CA include Justin-Siena High School, St. Helena Montessori School And Farm, and Napa Christian Campus Of Education.
How many private high schools are located in Napa County?
10 private high schools are located in Napa County.
How diverse are private high schools in Napa County?
Napa County private high schools are approximately 25% minority students, which is lower than the California private school average of 49%.
What percentage of private high schools are religiously affiliated in Napa County?
90% of private high schools in Napa County are religiously affiliated (most commonly Baptist and Catholic).

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