Justin-Siena High School Photo

Best Napa County Private High Schools (2025-26)

For the 2025-26 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 Napa Christian Campus Of Education, Justin-Siena High School, and St. Helena Montessori School And Farm.
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 (2025-26)

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

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 Napa Christian Campus Of Education, Justin-Siena High School, and St. Helena Montessori School And Farm.
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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