For the 2025-26 school year, there are 30 private high schools serving 8,942 students in San Mateo County, CA.
The top ranked private high schools in San Mateo County, CA include The Nueva Middle School, Sacred Heart Schools, Atherton, and Woodside Priory School.
The average tuition cost is $39,743, which is higher than the California private high school average tuition cost of $23,280.
Top Ranked San Mateo County Private High Schools (2025-26)
School
Location
Quick Facts
Fusion Academy San Mateo![Fusion Academy San Mateo Photo - Students get to be up close to everything in our science lab. In the one-to-one classroom students are always involved in experiments and have a hands-on approach to learning. We have college-level tools available and the world can be their classroom if they choose to venture out of the science lab.]( "Fusion Academy San Mateo Photo - Students get to be up close to everything in our science lab. In the one-to-one classroom students are always involved in experiments and have a hands-on approach to learning. We have college-level tools available and the world can be their classroom if they choose to venture out of the science lab.")
Alternative School
2000 Alameda de las Pulgas, Suite 128
San Mateo, CA 94403
(877) 673-8893
San Mateo, CA 94403
(877) 673-8893
Gr: 6-12 Avg. class size: 1 student Tuition listed
Fusion Academy San Mateo - Foster City![Fusion Academy San Mateo - Foster City Photo - Classes at Fusion are one-to-one: one student and one teacher. Teachers personalize content and act as mentors in the one-to-one setting.]( "Fusion Academy San Mateo - Foster City Photo - Classes at Fusion are one-to-one: one student and one teacher. Teachers personalize content and act as mentors in the one-to-one setting.")
Alternative School
1840 Gateway Dr., Ste. 100
San Mateo, CA 94404
(877) 673-8893
San Mateo, CA 94404
(877) 673-8893
Gr: 6-12 Avg. class size: 1 student Tuition & acceptance rate listed
400 Uplands Drive
Burlingame, CA 94010
(650) 342-4175
Burlingame, CA 94010
(650) 342-4175
Gr: 6-12 | 576 students Avg. class size: 15 students Sports: 17 Tuition listed
Junipero Serra High School![Junipero Serra High School Photo - Four members of Serra's mock trial team]( "Junipero Serra High School Photo - Four members of Serra's mock trial team")
All-boys (Catholic)
451 W 20th Ave
San Mateo, CA 94403
(650) 345-8207
San Mateo, CA 94403
(650) 345-8207
Gr: 9-12 | 892 students Avg. class size: 24 students Sports: 16 | Extracurrculars: 58 Tuition & acceptance rate listed
Lydian Academy![Lydian Academy Photo - Cole in the hallway of 205 Park Road.]( "Lydian Academy Photo - Cole in the hallway of 205 Park Road.")
Special Program Emphasis
205 Park Rd.
Burlingame, CA 94010
(650) 437-2633
Burlingame, CA 94010
(650) 437-2633
Gr: 5-12 | 20 students Avg. class size: 1 student Extracurrculars: 6 Tuition & acceptance rate listed
Lydian Academy
(2)
815 El Camino Real
Menlo Park, CA 94025
(650) 321-0550
Menlo Park, CA 94025
(650) 321-0550
Gr: 6-12 | 70 students Avg. class size: 1 student Tuition & acceptance rate listed
50 Valparaiso Ave
Atherton, CA 94027
(650) 330-2001
Atherton, CA 94027
(650) 330-2001
Gr: 6-12 | 818 students Avg. class size: 10 students Sports: 14 | Extracurrculars: 26 Tuition listed
2750 Adeline Drive
Burlingame, CA 94010
(650) 343-3631
Burlingame, CA 94010
(650) 343-3631
Gr: 9-12 | 387 students Avg. class size: 17 students Sports: 16 | Extracurrculars: 3 Tuition listed
Notre Dame High School
All-girls (Catholic)
1540 Ralston Ave
Belmont, CA 94002
(650) 595-1913
Belmont, CA 94002
(650) 595-1913
Gr: 9-12 | 417 students Avg. class size: 15 students Tuition & acceptance rate listed
The Nueva Middle School
Special Program Emphasis
6565 Skyline Blvd
Burlingame, CA 94010
(650) 235-7172
Burlingame, CA 94010
(650) 235-7172
Gr: PK-12 | 960 students Avg. class size: 15 students Sports: 10 Tuition & acceptance rate listed
The Nueva School
Special Program Emphasis
131 E 28th Ave
San Mateo, CA 94403
(650) 235-7172
San Mateo, CA 94403
(650) 235-7172
Gr: PK-12 | 967 students
Sacred Heart Schools Atherton
(Catholic)
150 Valparaiso Ave
Atherton, CA 94027
(650) 473-4057
Atherton, CA 94027
(650) 473-4057
Gr: PK-12 | 1,070 student
Sacred Heart Schools, Atherton![Sacred Heart Schools, Atherton Photo - Sacred Heart Schools, Atherton sits one 64-acre campus housing the Preschool & Kindergarten, Lower & Middle Schools and Preparatory.]( "Sacred Heart Schools, Atherton Photo - Sacred Heart Schools, Atherton sits one 64-acre campus housing the Preschool & Kindergarten, Lower & Middle Schools and Preparatory.")
(Catholic)
150 Valparaiso Avenue
Atherton, CA 94027
(650) 322-1866
Atherton, CA 94027
(650) 322-1866
Gr: NS-12 | 1,216 student Avg. class size: 15 students Sports: 14 | Extracurrculars: 5 Tuition & acceptance rate listed
608 N. El Camino Real and 452 5th Avenue, Redwood City
San Mateo, CA 94401
(650) 367-6791
San Mateo, CA 94401
(650) 367-6791
Gr: K-12 Avg. class size: 3 students Sports: 3 | Extracurrculars: 1 Tuition & acceptance rate listed
Woodside Priory School![Woodside Priory School Photo - School spirit is huge at Priory. More than 30 club and activity choices are available to High School students. Clubs provide opportunities to discover passions, develop strengths, apply academic knowledge in a practical way, develop self-knowledge, and learn to make the choices necessary to manage a busy schedule independently.]( "Woodside Priory School Photo - School spirit is huge at Priory. More than 30 club and activity choices are available to High School students. Clubs provide opportunities to discover passions, develop strengths, apply academic knowledge in a practical way, develop self-knowledge, and learn to make the choices necessary to manage a busy schedule independently.")
(Catholic)
302 Portola Road
Portola Valley, CA 94028
(650) 851-8223
Portola Valley, CA 94028
(650) 851-8223
Gr: 6-12 | 444 students Avg. class size: 13 students Sports: 13 | Extracurrculars: 24 Tuition & acceptance rate listed
475 Pope Street
Menlo Park, CA 94025
(650) 324-8617
Menlo Park, CA 94025
(650) 324-8617
Gr: PK-12 | 243 students Avg. class size: 18 students Sports: 5 | Extracurrculars: 18 Tuition listed
American Advanced Academy
Special Program Emphasis
1430 Palm Drive
Burlingame, CA 94010
(650) 343-3088
Burlingame, CA 94010
(650) 343-3088
Gr: K-12 | 43 students
The Avalon Academy
Special Education School
818 Mahler Rd
Burlingame, CA 94010
(650) 777-9133
Burlingame, CA 94010
(650) 777-9133
Gr: K-12 | 19 students
Compass High School![Compass High School Photo]( "Compass High School Photo")
Special Education School
1500 Ralston Avenue
Belmont, CA 94002
(650) 437-2100
Belmont, CA 94002
(650) 437-2100
Gr: 9-12 | 37 students Avg. class size: 6 students Sports: 4 | Extracurrculars: 7 Tuition listed
Fusion Academy - San Mateo
Alternative School
2000 Alameda De Las Pulgas Ste 128
San Mateo, CA 94403
(650) 312-8305
San Mateo, CA 94403
(650) 312-8305
Gr: 6-12 | 63 students
1840 Gtwy Dr Ste 100
San Mateo, CA 94404
(949) 612-9242
San Mateo, CA 94404
(949) 612-9242
Gr: 6-12 | 51 students
705 Oak Grove Ave
Menlo Park, CA 94025
(650) 321-1191
Menlo Park, CA 94025
(650) 321-1191
Gr: 2-10 | 8 students
Main Street Scholars
Alternative School
60 Stone Pine Rd Ste 200
Half Moon Bay, CA 94019
(650) 440-4725
Half Moon Bay, CA 94019
(650) 440-4725
Gr: 7-11 | 6 students
1340 Willow Road
Menlo Park, CA 94025
(650) 321-1991
Menlo Park, CA 94025
(650) 321-1991
Gr: 9-12 | 137 students Avg. class size: 12 students Sports: 7 Tuition listed
1215 O'Brien Dr
Menlo Park, CA 94025
(650) 260-3805
Menlo Park, CA 94025
(650) 260-3805
Gr: PK-12 | 19 students Avg. class size: 12 students
Pacific Bay Christian School![Pacific Bay Christian School Photo]( "Pacific Bay Christian School Photo")
(Christian)
1030 Linda Mar Boulevard
Pacifica, CA 94044
(650) 355-1935
Pacifica, CA 94044
(650) 355-1935
Gr: 5-12 | 190 students Avg. class size: 17 students Sports: 9 | Extracurrculars: 8 Tuition & acceptance rate listed
Stanbridge Academy![Stanbridge Academy Photo - Stanbridge Academy is a caring, inclusive K-12 school for students with mild to moderate learning differences and social communication disorders. We use an individualized, whole student approach so that students thrive and develop their academic, social, and emotional capabilities to their fullest potential.]( "Stanbridge Academy Photo - Stanbridge Academy is a caring, inclusive K-12 school for students with mild to moderate learning differences and social communication disorders. We use an individualized, whole student approach so that students thrive and develop their academic, social, and emotional capabilities to their fullest potential.")
Special Education School
515 E. Poplar Ave.
San Mateo, CA 94401
(650) 375-5860
San Mateo, CA 94401
(650) 375-5860
Gr: K-12 | 80 students Avg. class size: 8 students Sports: 5 | Extracurrculars: 18 Tuition listed
Academy Hall Floor 2 8853 415 Broadway
Redwood City, CA 94063
(650) 721-9422
Redwood City, CA 94063
(650) 721-9422
Gr: 7-12 Tuition listed
Wings Learning Center
Special Education School
2500 Cottonwood Drive
San Bruno, CA 94066
(650) 624-3165
San Bruno, CA 94066
(650) 624-3165
Gr: PK-12 | 38 students Avg. class size: 6 students
San Mateo County Private Schools (Closed)
School
Location
Quick Facts
A Childs Way (Closed 2023)
Daycare / Preschool
817 Murchison Dr
Millbrae, CA 94030
(650) 697-4760
Millbrae, CA 94030
(650) 697-4760
Gr: K | 21 students
Kindercourt Academy (Closed 2024)
Daycare / Preschool
1225 Greenwood Ave
San Carlos, CA 94070
(650) 591-4882
San Carlos, CA 94070
(650) 591-4882
Gr: K | 69 students
Mater Dolorosa School (Closed 2006)
(Catholic)
1040 Miller Avenue
South San Francisco, CA 94080
(650) 588-8175
South San Francisco, CA 94080
(650) 588-8175
Gr: K-8 | 203 students
Newton (Closed 2010)
Special Program Emphasis
1157 Chess Drive Ste 100
San Mateo, CA 94404
(650) 345-4043
San Mateo, CA 94404
(650) 345-4043
Gr: K-8 | 243 students
Peninsula Christian School (Closed 2006)
(Assembly of God)
1305 Middlefield Road
Redwood City, CA 94063
(650) 366-3842
Redwood City, CA 94063
(650) 366-3842
Gr: PK-8 | 101 students
Roger Williams Academy (Closed 2024)
(Calvinist)
600 Grand Ave
South San Francisco, CA 94080
(415) 238-9669
South San Francisco, CA 94080
(415) 238-9669
Gr: 4-10 | 15 students
Frequently Asked Questions
What are the top ranked private high schools in San Mateo County, CA?
The top ranked private high schools in San Mateo County, CA include The Nueva Middle School, Sacred Heart Schools, Atherton, and Woodside Priory School.
How many private high schools are located in San Mateo County?
30 private high schools are located in San Mateo County.
How much do private high schools cost in San Mateo County?
The average tuition cost is $39,743, which is higher than the California private school average tuition cost of $23,280.
How diverse are private high schools in San Mateo County?
San Mateo County private high schools are approximately 36% minority students, which is lower than the California private school average of 48%.
What percentage of private high schools are religiously affiliated in San Mateo County?
Which private high schools in San Mateo County are often viewed compared to one another?
Popular comparisons of private high schools in San Mateo County include: Mercy High School vs. Notre Dame High School, Notre Dame High School vs. Mercy High School, Fusion Academy San Mateo vs. Fusion Academy San Mateo - Foster City
Recent Articles
Transferring from Public to Private School Mid-Year: What to Expect
Considering a mid-year transfer from public to private school? Learn what to expect with admissions, academic placement, social adjustment, and financial aid to ensure a smooth transition.
A Guide to Day vs. Boarding School: Which Is Right for Your Family
Discover the key differences between day and boarding schools to determine the best fit for your child. Explore benefits, costs, lifestyle factors, and questions to help guide your family’s decision.
The A to Z of Private Schools 2025
Explore the A to Z of private schools in 2025—from admissions to tuition—offering parents and educators clear insights into today’s options.
