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Strengths STEM, Academic Enrichment, Service and Sustainability
Clubs Arts and Creative, Community and Service, Leadership and Professional
Stages Early Years, Primary School, Middle School, High School
Introduction
California Prep International School (CPIS), in Saraburi’s Kaeng Khoi district, offers Kindergarten through Grade 12 education using the California Department of Education curriculum adapted to local needs. Founded in 2010 and licensed in 2011, the school is among Thailand’s first fully e‑learning international schools, blending in‑person teaching with digital learning tools. Students engage in core subjects like English, Math, Science, Business, as well as Thai and Chinese, with STEM introduced as a formal subject since 2019. CPIS supports academic progress through SAT, TOEFL, and AP preparation, and students participate in community service initiatives such as orphanage visits. The school emphasizes self‑discipline, character, and talent development through enrichment programs, choir and band performances, and leadership training. With tuition ranging approximately. 72,000–95,000 THB annually, it serves a multicultural student body aged 3–18. As a co‑educational day school situated in a quieter region of central Thailand, it provides a focused environment for families seeking an American-style curriculum delivered through modern, technology‑enhanced methods.
California Prep International School has 150 pupils, typical class sizes of 15, instruction in English.
Location
California Prep International School is located in Kaeng Khoi district, Saraburi province, central Thailand. The campus is situated along Mittraphap (Friendship) Road, providing road connections to Bangkok and the northeast region. The area is semi-rural, offering a quieter setting within reach of transport links and local communities.
Stages
The school provides education from Kindergarten (starting at age 3) through Grade 12 (up to age 18). It is divided into Early Years, Elementary, Middle School, and High School, following a U.S. grade structure.
Type
California Prep is a co-educational international school. While primarily a day school, it also offers boarding facilities for both Thai and foreign students.
Additional learning support
The school does not publicly disclose information regarding Special Educational Needs (SEN) or additional learning support provision.
Country affiliation
The school follows the California Department of Education curriculum, but it is not officially affiliated with any country’s government.
Religious affiliation
The school does not state a formal religious affiliation.
School day structure
Specific daily start and end times, as well as details on breaks and lunch periods, are not publicly disclosed.
Bus service
California Prep International School provides a van service for students. The service is arranged through the school, and families can obtain route and fee details directly from the admissions office. Information is also included in the admissions documents and fee schedules. This option supports families living in surrounding areas who prefer organized transport to and from the campus.
Fees
Annual tuition at California Prep International School ranges from THB 84,000 to THB 107,000 for 2026/27.
Application Fees A one-time Application and Assessment Fee of THB 1,000 is required for all new students. In addition, a Development and Registration Fee applies: THB 40,000 for Thai day students, THB 50,000 for foreign day students, and THB 80,000 for boarding students. A refundable security deposit of THB 5,000 (day students) or THB 10,000 (boarding students) is also required and returned upon withdrawal if school conditions are met.
Fees are billed by semester, with one-time fees charged in the first semester of enrollment.
Additional Fees Textbooks and eBooks: THB 5,000 per semester Activities and field trips: THB 3,500 per semester (or THB 6,500 annually if prepaid) STEM and technology fee: THB 2,500 per semester Graduation fee: THB 2,000 for K3 and Grade 5; THB 2,500 for Grade 8 and Grade 12 Uniform: THB 4,000 (one-time)
Transportation Fees The school offers a van service. Fees and routes are arranged directly through the Admissions and Finance Office, with details provided to parents at the time of enrollment.
Boarding Fees Boarding is available from Grade 1 upwards. The cost is THB 65,000 per year plus THB 1,000 per weekend for Grades 1–3, THB 60,000 per year for Grades 4–12, or THB 85,000 per year for a full seven-day boarding option. Foreign students also pay health insurance (THB 14,000 per year) and a student visa fee (THB 5,000 per year).
Refund Policy The refundable security deposit is returned when a student withdraws, provided conditions are met. Other refund policies are not specified.
Payment Options Payments can be made via bank transfer to the school’s Kasikorn Bank account.
Academics
California Prep International School teaches American Curriculum for students aged 3 to 18.
Curriculum
California Prep International School delivers an American curriculum aligned with the California Department of Education. The program runs from Kindergarten (age 3) through Grade 12 (age 18), with English as the primary language of instruction and Thai and Chinese taught as additional languages. In the early years and primary levels, students focus on foundational literacy, numeracy, and inquiry-based learning. Middle and high school expand into specialized streams such as Business/English, Business/Computer, and Math/Science, alongside compulsory subjects in Science, Mathematics, and Humanities. Since 2019, STEM has been a formal subject across levels, supporting technology skills and applied sciences. At the upper secondary stage, students are prepared for standardized tests, including the TOEFL, SAT, and Advanced Placement (AP) exams, providing pathways to international higher education
Wellbeing
Social and Emotional Learning (SEL)
The school does not publicly disclose information regarding Social and Emotional Learning (SEL) initiatives, staff, or programs on its website.
Special Educational Needs (SEN)
The school does not publicly disclose information regarding Special Educational Needs (SEN) provision.
English as an Additional Language (EAL)
The school does not publicly disclose information regarding EAL support.
Mental Wellbeing
The school does not publicly disclose information regarding mental well-being programs, staff, or initiatives.
Safeguarding
The school does not publicly disclose detailed information on safeguarding or child protection policies. It is, however, accredited by WASC (Western Association of Schools and Colleges) and ONESQA (Office for National Education Standards and Quality Assessment, Thailand), which require member schools to meet baseline standards of student welfare and safety.
Admissions
Admissions
1. Families begin by completing the official application form, which is available in English or Thai. An appointment with the Admissions Office should be arranged through the school’s contact channels. At this stage, families should prepare the required documentation, such as identification papers and academic records.
2. Prospective students undergo a placement test to determine their academic level. An interview is conducted with the student, and parents also meet with the Admissions Committee. This step helps ensure that the school understands the student’s background and needs.
3. Parents must submit the completed application form along with supporting documents. For Thai students, this includes copies of the birth certificate, house registration, transcript, and a medical certificate. Non-Thai students must also provide passport copies, a valid visa or work permit of the parent, proof of legal status, and a receipt of escrow deposit.
4. Upon successful assessment and acceptance, families finalize registration through the Finance Office. This step involves paying the required entrance fees, deposits, and development fees as outlined in the fee schedule.
5. New students attend an orientation program where they are introduced to the school environment and paired with a student buddy. Middle and High School students also receive guidance on using the school’s e-learning systems. This process helps students settle smoothly into their new school life.
Scholarships
California Prep International School offers scholarships to support different categories of students. These include awards for academic excellence, assistance for students from financially disadvantaged backgrounds, and recognition of outstanding talent in areas such as sports or the arts. Details on eligibility and the selection process are not published publicly, and families are encouraged to contact the school directly for current criteria and availability.
Waitlist
The school does not publicly disclose operating a waitlist or pool system.
FAQs
What curriculum does California Prep follow?
California Prep follows the California Department of Education curriculum from Kindergarten through Grade 12, blending in-person teaching with digital learning tools.
Does the school offer boarding?
Yes, California Prep offers boarding facilities for both Thai and international students alongside day schooling.
What are the fees?
Annual tuition ranges from 84,000 to 107,000 THB. Application and assessment fee is 1,000 THB. Development fees vary for Thai day, foreign day and boarding students.
Where is the school located?
The school is in Kaeng Khoi district, Saraburi province, central Thailand, along Mittraphap Road about an hour from Bangkok.
What accreditations does the school hold?
California Prep is fully accredited by WASC with six-year accreditation status and by ONESQA (Thailand). It was named among the 10 Best International Schools in Thailand in 2018.
What languages are taught?
English is the primary language of instruction with Thai and Chinese taught as additional languages.
Does the school offer scholarships?
Yes, scholarships are available for academic excellence, financially disadvantaged students and other categories.
How many students attend?
California Prep has approximately 150 students.
Is there a PTA?
Yes, the PTA actively supports academic and extracurricular activities, helping organise school-wide events.
What makes the school distinctive?
CPIS is among Thailand's first fully e-learning international schools, integrating digital learning tools throughout the curriculum with STEM from early years.
When was the school founded?
Founded in 2010 and licensed in 2011, the school was established by educators with a focus on innovation and international education.
