The graduation ceremony will be held on Friday, May 29, 2026.

Welcome to CPREP International School

California Prep International School

We Provide High Quality Education for K-12

Our Vision

California Prep International School envisions to be recognized as the #1 school in Thailand that specializes in K-12 education ....

Our Mission

California Prep is committed to the harmonious development of the whole person for student excellence in...

Our CPIS Programs

Achieve Highest Level of Learning on CPIS Campus and in the Comfort of Your Home

Student Life

Pathfinder CLub

Academic Levels

We provide the best balanced and child-centered education.

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Enrolled Students
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Years of Teaching
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Teachers & Staff
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Our Founders

The Foundation of California Prep International School

(California Prep or CA Prep or CPIS) was co-founded by Dr. Phakdee Mangmiwatthana (Ph.D.) and Dr. Adelino Libato (Ph.D.) on November 14, 2010.​

Phakdee Mangmiwatthana, PH.D.

Executive Director & Co-Founder
View Profile

Adelino T. Libato,
PH.D.

Co-Board Chairman & Co-Founder
View Profile

Events

Check out our upcoming events

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Upcoming Events:

Songkran Program--------------------------------------------------------------------------April 10, 2026

Songkran Break (Public Holiday)----------------------------------------------------April 13-17, 2026

WASC Online Accreditation-------------------------------------------------------------April, 20-30, 2026

Grade 12 Oral Defense--------------------------------------------------------------------April 22-24, 2026

Labor Day----------------------------------------------------------------------------------------April 1, 2026

Coronation Day--------------------------------------------------------------------------------May 4, 2026

Submission of 4th Quarter Exams---------------------------------------------------
May 11, 2026

4th Quarter Final Examination---------------------------------------------------------May 25-27, 2026

ITBS Post Test-------------------------------------------------------------------------------- May 5-8, 2026

Summer Class Course A:----------------------------------------------------------------March 16,-May 1, 2026

Songkran Festival Break: ----------------------------------------------------------------April 13-17, 2026

Summer Class Course B:----------------------------------------------------------------March 16,-July 9, 2026

Summer Class Course C:---------------------------------------------------------------June 4,-July 9, 2026

Student's Spotlight 2025-2026:

  • Ping (Alumni 2024) – Toshiba Scholar at KMUTT

  • Mr. Wiss Jittathorn (G12) – Full Scholarship to University of Nevada, Reno

  • Wanicha “Berry” Thongkote (G5) – International Dance Achiever

  • Krisadanat & Khemanat Sangpirom – Junior Golf Champions 2025

  • Nattarin “Audi” Ariyapitakdecha (G5) – Dance Solo Second Prize, Japan

  • Master Kalin Komprajya (G8) – National Recognition Awardee

  • Kalin “Heng” Khompratya (G8) – Youth Ambassador for International Culture 2025

  • Kalin Khompratya (G8) – Double 1st Place, Symphony Classical 2025

  • Top (G6) – Thailand Ice Hockey Champion 2025

  • Phunnapa Yopinta (G6) – Osaka International Music Competition Awardee

  • Mr. Teethat Thongkhot (G10) – Outstanding Child and Youth 2026

  • Mayteenat “Stamp” Sakkarinkul (G11) – National Academic Excellence Award

    • Nanlinee “Yada” Chutkittiyakorn (G6) – Silver Medal Certificate in English – Upper Elementary Level, National Academic Test
    (NAT) 2025

  • • Nawin Chimnoi (G5) - Gold Medal, National Advanced English Competition (NAEC 2025) & Diamond Medal, National Spelling Bee Preliminary Round (NSB 2025)

    CALIFORNIA PREP STUDENTS COME & GO!

    COUNTRIES WHERE CPIS STUDENTS HAVE BEEN COMING FROM and Going to SINCE 2011 TO 2023

    UK, NETHERLANDS, GERMANY, SWITZERLAND, ITALY, AUSTRIA, CROATIA, LIECHTENSTEIN, MYANMAR, INDIA, LAOS, CAMBODIA, THAILAND, VIETNAM, INDONESIA, PHILIPPINES, CHINA, HONGKONG, SOUTH AFRICA, TAIWAN, IVORY COAST, PAKISTAN, JAPAN, AUSTRALIA, RUSSIA, USA, BANGLADESH, CANADA, & HUNGARY.

    BANGKOK UNIVERSITY

    THAILAND

    SRIPATUM UNIVERSITY

    THAILAND

    TIASIN MEDICAL, CHINA

    CHINA

    KASETSART UNIVERSITY

    THAILAND

    BURAPHA UNIVERSITY

    THAILAND

    KING MONGKUT’S INSTITUTE OF TECHNOLOGY LADKRABANG

    THAILAND

    WILLIAM ANGLISS INSTITUTE

    AUSTRALIA

    UNIVERSITY OF THE THAI CHAMBER OF COMMERCE

    THAILAND

    UNSURE OF THE EXACT NAME

    ITALY

    MAEJO UNIVERSITY

    THAILAND

    STAMFORD UNIVERSITY

    THAILAND

    PHRA NAKHON SI AYUTTHAYA RAJABHAT UNIVERSITY

    THAILAND

    STUDIENKOLLEG MUNICH

    GERMANY

    LICEO DE CAGAYAN UNIVERSITY

    PHILIPPINES

    CENTRAL PHILIPPINES UNIVERSITY, ILOILO

    PHILIPPINES

    THAMMASAT UNIVERSITY

    THAILAND

    CHIANG MAI UNIVERSITY

    THAILAND

    MAE FAH LUANG UNIVERSITY

    THAILAND

    MAHIDOL UNIVERSITY

    THAILAND

    UNIVERSITY OF MISSOURI

    USA

    ASSUMPTION UNIVERSITY

    THAILAND

    ASIA-PACIFIC INTL UNIVERSITY

    THAILAND

    UNSURE OF THE EXACT NAME

    TAIWAN

    CHULALONGKORN UNIVERSITY

    THAILAND

    BANGKOK THONBURI UNIVERSITY

    THAILAND

    BRUNEL UNIVERSITY LONDON

    ENGLAND

    MOUNTAIN VIEW COLLEGE

    PHILIPPINES

    DUSIT THANI COLLEGE

    THAILAND

     

    🎉👏🚀MSME First Year Students Won a Worldwide Innovation Public Challenge!
    Congratulations! A team of first year students from MSME Business School’s Design and Digital Innovation (DDI) program has won the 2021 PRU Fintegrate Competition, as announced on November 11, 2021. The ‘Care U’ team consists of three students from the DDI program, namely Pornpipat Kitireanglarp (Gem), Rapeepan Yuenyong (Pee), Kornkamol Lumpeng (Ice), and were joined by Chunnakan Sematut (Oak) from Chulalongkorn University’s BASCII program. The ‘Care U’ team was awarded 1,000 USD for their creative contribution to the First Innovation Challenge. The Challenge’s theme was on nutrition.
     
    Competing against participants from around the world, ‘Care U’ proposed an idea to “change the environment” by organizing cabinets and refrigerators in a way that would subconsciously make family members consume healthy food. The team was mentored by two highly knowledgeable and dedicated faculty members of the Vincent and Mary School of Science and Technology: Dr. Songsak Channarukul, Dean, and Ajarn Tapanan Yeophantong, Assistant Dean for External Affairs.
     
    Organized by Prudential, the 2021 PRU Fintegrate Competition solicits participation from the design, tech, and student communities to come up with ideas or solutions that create an impact on people’s health and wealth.

    We dedicate our life to our profession in harnessing and preparing your child towards the future.

    News

    Be updated of What's happening

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    Contact

    Let us know if you have questions, inquiries, & Suggestions

    Phone:

    Phakdee Mangmiwatthana

    Licensee, Director & Co-Founder
    California Prep International School, Saraburi

    Education
    BA, SAUC, Singapore
    MA, AIIAS, Philippines
    Ph.D., NIDA, Thailand

     

    Professional Experience

    Dean of Faculty, Business Administration: Asia-Pacific International Univerity
    Associate Professor, Business Department: Asia-Pacific International University, Saraburi
    Board Chair: Ekamai International School, Bangkok
    President: Thailand Adventist Mission, Bangkok, Thailand
    Vice-President for Student Affairs: Mission College (now Asia Pacific International University), Muaklek, Thailand
    Director & Co-Founder: Saint John Mary International School, Saraburi, Thailand
    Director, Co-Founder, & Licensee: California Prep International School, Kaeng Khoi, Saraburi, Thailand
    Licensee, Co-Founder & Business Manager: Khon Kaen International School, Kaeng Khoi, Saraburi, Thailand

    Adelino T. Libato, PH.D.

    Co-Board Chairman / Co-Founder / Academic Administator

    California Prep International School (Kaeng Khoi, Saraburi)

    EDUCATION:
    • Ph.D.- Educational Administration/Management, Central Mindanao University
    (CMU), Philippines. (1987-1992). CMU is a government-operated university. (with
    Personnel Management or HRM)

    • M.A.- Adventist University of the Philippines (AUP), Silang, Cavite, Philippines

    • M.A.- Adventist International Institute of Advanced Students (AIIAS is operated by
    the General Conference of the SDA in Maryland, USA. Sister institutions: Loma Linda
    University, CA and Andrews University, MI, USA)

    • AB Theology (+Education & Business Credits) Mountain View College, Valencia,
    Bukidnon
    Diploma (Leadership & Management), Southern Christian College, Midsayap,
    Cotabato

    CURRENT POSITIONS:
    • Co-Board Chair/Co-Founder/Academic Administrator: California Prep International
    School (Saraburi, Thailand)
    • Board Chair/Co-Founder/Academic Consultant: American Prep International School
    (Hat Yai, Thailand)
    • Consultant (Management, OB, OD, HR) with CPIS Team: International Schools &
    Establishments (Asia)
    • Board Co-Chair, NIVA American International School, Ladprao, Bangkok. (Former
    Accreditation & Management of Learning Consultant)
    • Consultant, Sengdara International School, Vientiane, Laos


    FORMER POSITIONS/EXPERIENCES:
    • CEO-Board Chair/WASC-Academic Consultant, Siam International School, Rangsit,
    Pathumtani, Thailand

    • Vice-President for Human Resources- Thailand Based: Health and Education Foundation Inc. (Stegman Pkwy, Jersey City, NJ 07305)

    • Chair, Advisory Board: Anglo Singapore International School (Bangkok Suk. 64 & 31 & Korat)

    • WASC Consultant, Adventist International Mission School, Asia-Pacific International
    University
    • Principal/Acting Director (Academic Administrator & AP Coordinator), Ekamai
    International School, Sukhumvit 37
    • Principal/Consultant, St. John Mary International School, Saraburi, Thailand (2005-2007)
    • ETS CETAS Administrator/Co-founder, SJMIS TOEFL Center, Saraburi, Thailand
    • Deputy Director for Development/WASC Consultant, Trinity International School,
    BKK
    • Board Chair/CIS-WASC Consultant: Anglo Singapore International School (Bangkok,
    Thailand)
    • Principal (Founding Days), AIIAS International Elementary School, Silang, Cavite
    (1992-1994) and Mountain View Academy (MVC), Mindanao, Philippines (1988-
    1990)
    • Consultant & Board Co-Chair, Glory Singapore International School, Bangkok.

    TEACHING & SABBATICAL:
    • Associate Professor, School of Graduate Studies, AIIAS, Silang, Cavite. Teaching Ph.D.
    & MBA courses in AIIAS & its Distance Learning Centers in various Asian countries
    (Malaysia, Thailand, Indonesia, Myanmar, Bangladesh, etc.): Leadership &
    Administration, Organizational Behavior, HRM/HRD, Organizational Theory,
    Supervision & Instruction, & Youth Leadership. Seminary course taught: Church
    Administration, Advanced Strategies in Teaching Bible
    • Acting Dean/Chair, School of Graduate Studies & Educational Studies Dept., AIIAS
    and Director of Degree Program (MA Religious Education), AIIAS, Philippines
    • Sabbaticals (Research & Seminars) in various universities: UCLA, Harvard, Stanford,

    Wharton Business School, ECLA-Berkeley, Oxford, Cambridge, Stern Business School-
    NYU, MIT-Boston, CA & London.

    • Professor; Dean-School of Liberal Arts and Business; Department Chair; Principal:
    Mountain View College, Mindanao
    • Visiting Lecturer at Asia-Pacific International University, Muak Lek, Saraburi and
    Philippine Christian University, Manila, Philippines in Consortium with Belarmine
    Global Education, Bangkok, Thailand

    ACCREDITATION EXPERIENCES:
    • 1988: Chair, MVC, First ACSC Accreditation Visit (College & Academy)
    • 1997: Coordinator, 1st AIIAS PAASCU accreditation visit (February)
    • 1998: Co-Chair, AIIAS Coordinating Task Force for the Level II PAASCU visit,
    Philippines

    • 2003: Academic Council Chair/Leadership Team Chair, Ekamai International School
    (EIS) for the Team Visit, Western Association of Schools & Colleges (WASC),
    California, USA. EIS was awarded a 6-year accreditation from 2004 to 2010
    • 2005-2008: Consultant, WASC Accreditation for TRIS, SIS, SJMIS, TAM, etc.
    • 2009-2016: WASC/CIS Accreditation Consultant to several international schools in
    Thailand

    WHO’S WHO LIST:
    “The global online community of Filipino graduate scholars harnessing information technology
    to
    attain international recognition.”
    http://www.everyfilipino.com/Thesis.htm
    http://www.everyfilipino.com/Thesis26.htm (Thesis) Ph.D., Central Mindanao University
    (Dissertation)
    http://www.everyfilipino.com/Thesis_add.htm
    NOTE:
    Accreditation Training Attended- PAASCU, AAA, WASC, CIS, WES, & ACSC-AA (Bangkok, Saigon,
    Kuala Lumpur, San Francisco- CA, Philippines- Cebu/Cagayan de Oro, etc.)
    Publication/Contribution and Other Highlights:
    • Contributor, Ellen G. White Encyclopedia, ISBN: 9780828025041, Review and Herald
    Publishing, USA, Copyright 2014
    • Wrote two correspondence courses for AIIAS on “Organizational Behavior” and
    “Secondary School Principalship” for AIIAS (1993-96)
    • Presenter, “In-servicing of Christian Teachers Toward the Integration of Faith
    Learning and Life” at the International Conference of Christian College Teaching,
    Union College, Lincoln, Nebraska & Published in “Christ in the Classroom”, Vol. 2,
    Washington, D.C.: Institute for Christian Teaching 1991. (Also presenter in Palo,
    Leyte SDA National Teachers’ Convention-1988)
    • Contributed an article titled, “Putting the ‘Team’ in Teamwork”, International Forum,
    School of Graduate Studies, AIIAS. ISSN 0119- 2000. October. This was read to the
    faculty of Trinity College, Manila on February 21, 2000

    • Contributed an article titled, “Giant overall mission/vision rediscovered in church-
    related institutions”, International Forum, School of Graduate Studies, AIIAS, ISSN

    0119-2000. April
    • Contributed an article titled, “The Theo-Scriptura Worldview: A Viable Option for
    21st-century Educators”, Intl. Forum, School of Graduate Studies, AIIAS, 0119-2001,
    April
    • MA Thesis: “A Survey on Personal Values of the Adventist Seniors in Luzon”, Master’s
    Thesis, Philippine Union College or Adventist University of the Philippines (1983)

    • Ph.D. Dissertation: “Determinants of Administrators’ Facilitative Instructional
    Leadership in the Philippines” Doctoral Dissertation, Central Mindanao University,
    Bukidnon (1992)
    • Adviser/External Critic: Theses and Dissertations in AIIAS, AUP, Cavite & University
    of the Philippines, Diliman, Quezon City
    • Speaker (Motivational/Spiritual/Seminar): Myanmar, New Jersey, California,
    Micronesia, Thailand, & Philippines; Recent: AYA Conferences, EIS, Bangkok (Dec 15,
    2018) & MVAT Conference, EIS, Bangkok (Dec 1, 2018)
    • Former Member of AMA (New York), ASCD (Virginia, USA), and other societies
    • Panelist: 60th Anniversary of Thai-Phil Diplomatic Relations, August 7, 2010,
    Chulalongkorn University, Bangkok (Other panel members: Thai Ambassador to
    Philippines, Philippine Ambassador to Thailand, and a Thai Professor)
    • Certificate: Awarded for passing the first Teachers Board examination for teachers in
    Manila: “Pambansang Lupon sa mga Guro (1979)
    • Certificate: Awarded Teacher’s License in Thailand (2007-2008)
    • Certificate: Awarded an Administrator Certificate (2005-2012) by the Office of
    Education, Southeast Asia Union Mission of the SDA, Singapore
    • President: MVC Alumni Association; MVC Coop; MVC Student Association; Boys’
    Dorm Association; AUP Graduate School Student Association; Joint AUP-AIIAS
    Graduating Class
    • Editing Experience: Editor of MVC School Paper and Associate Editor of MVC
    Yearbook