Welcome to CPREP International School
California Prep International School
We Provide High Quality Education for K-12
Our CPIS Programs
Achieve Highest Level of Learning on CPIS Campus and in the Comfort of Your Home
Academic Levels
We provide the best balanced and child-centered education.
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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.
Events
Check out our upcoming events
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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 TestCALIFORNIA 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 |
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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CPIS Holds Colorful International Day
California Prep International School came alive with color, culture, and global pride during its International Day celebration on Friday, October

On September 4, 2025, California Prep International School held its annual Wai Kru Day ceremony, a cherished Thai tradition where

Meditation & Week of Prayer 2025
From September 15 to 19, 2025, California Prep International School held its annual Week of Prayer under the uplifting theme
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