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Saint John Mary International School

Thailand, Saraburi

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The school at a glance
Instructs in English
Fees THB 113,000 - 234,600
Ages 2 - 18 years
Pupil numbers 500
Type Co-educational (boarding)
Opened 2004
Bus Service Yes
Academic offering
Curriculum American Curriculum
Taught languages Mandarin, Thai
Typical class size 20
Strengths Sport, STEM, Service and Sustainability
Clubs Arts and Creative, Social and Hobbies, Community and Service
Stages Primary School, Preschool, Kindergarten, Middle School, High School
Introduction

Saint John Mary International School (SJMIS), nestled at the foot of the Saraburi hills in central Thailand (approx. 100 km northeast of Bangkok), offers Pre KG to Grade 12 education with an American (State of California) curriculum. Students study in English, with Thai language classes and extracurricular Mandarin available. Class sizes average 23, with kindergarten support from teacher assistants. The school supports boarding and provides school van services. Around 450 students attend, guided by Director Barbara Tajti. Facilities include STEAM rooms and sports amenities like a swimming pool, soccer field, tennis courts, and golf driving range. Community service is embedded into the school culture, with students completing required service hours and the opportunity to earn a “Helping Hand Award” for 100+ hours. The school’s location in nature-rich Saraburi provides a refreshing learning environment outside the city.

131 Moo.1, Phahonyothin Road, Tambon Nongyao, Saraburi 18000, Thailand.

The Essentials

Saint John Mary International School has 500 pupils, typical class sizes of 20, instruction in English.

Location
Saint John Mary International School (SJMIS) is located in Nongyao, Mueang Saraburi District, about 100 km northeast of Bangkok. The school sits at the foot of the Saraburi hills in a semi-rural setting, while still being close to Saraburi city. The location is accessible via Phahonyothin Road, a major highway connecting Bangkok and northern provinces.

Stages
The school provides education from Pre-Kindergarten (age 2) through Grade 12 (age 18). It is structured into Kindergarten, Primary, Middle School, and High School, following a clear progression across age groups.

Type
SJMIS is a co-educational institution offering both day schooling and boarding options. Boarding facilities are available to support families who may be based further from Saraburi or relocating internationally.

Additional learning support
The school does not publicly disclose information about provisions for Additional Learning Needs (SEN). There are no details available on specific programmes, staff, or facilities for SEN support.

Country affiliation
The school is Thai-owned and operated, and it does not have an affiliation to another country.

Religious affiliation
While the school is sometimes described in external directories as Christian-affiliated, the school’s official website does not list a formal religious affiliation.

School day structure
The school does not publicly disclose information about daily start and finish times, or break and lunch schedules.

Bus service
Saint John Mary International School provides a school van service. Information on routes and fees is available through the school’s Admissions office, though detailed schedules and providers are not published online.
Diving Deeper

Boarding Arrangements
Boarding is offered for students from grade 1 to 12. Boarding is provided in two formats: Dormitory for students in grades 7 and above, and Homestay for students in grades 1–6. The boarding complex includes two dormitory buildings and ten Homestay houses; rooms accommodate 3–6 students. Boarders have access to facilities such as a swimming pool, basketball court, volleyball court, and a golf range.

Uniform Requirement
Uniforms are required on school days. Hair color must be natural. Sweaters must be a single color with no logos or writing. Leggings worn under skirts must be black or white. Socks must be worn. Athletic shoes are allowed. Long hair must be tied back. House shirts are worn for House activities only, not as part of the PE uniform. Students may wear the school tie unless otherwise directed. A single stud earring per ear is allowed.

Food Options
The school operates a lunch program with an on-site lunch menu (Lunch Menu) and a food menu is available for students.

House System
Boarding includes two housing options: Dormitory for older students and Homestay for younger students, with two dormitory buildings and ten Homestay houses. Rooms house 3–6 students. House activities use house shirts for participation.

Governance and Ownership
The school is owned and operated by Sang Young Mary Company. Ajarn Samai Chinapha, who founded the Saint John University of Bangkok and the Saint John School of Commerce, established the ownership lineage. The school is affiliated with ONESQA and ISAT and holds MOE recognition with WASC accreditation.
Fees

Annual tuition at Saint John Mary International School ranges from THB 113,000 to THB 234,600 for 2026/27.

Application Fees
A one-time registration fee of THB 50,000 is required for all new day students and THB 70,000 for boarding students. In addition, families must pay a refundable deposit of THB 15,000 (day) or THB 25,000 (boarding), which is returned upon withdrawal once accounts are settled and school property returned. A Leave of Absence Deposit of THB 30,000 may be required to retain student status; if the student does not return, only THB 10,000 is refunded.

Tuition Fees (Per Year)

American Curriculum Stream
Nursery (age 2): THB 121,000
Kindergarten 1 – 2 (ages 3–4): THB 148,000
Kindergarten 3 – Grade 5: THB 190,200 – 200,600
Grades 6 – 7: THB 200,600 – 214,200
Grades 8 – 9: THB 214,200 – 227,400
Grades 10 – 11: THB 240,400
Grade 12: THB 251,000

Fees are billed by semester, ranging between THB 56,000 and THB 117,300 depending on grade level.

Additional Fees
- English Language Development (ELD) program (if required): THB 20,000
- School uniforms, textbooks, and extracurricular activities are charged separately.

Transportation Fees
The school operates a school van service. Routes and fees are available from the Admissions Office, but detailed schedules and pricing are not published publicly.

Learning Support
The school does not publicly disclose information regarding SEN or additional learning support programmes.

Boarding Fees
- Grades 1 – 6 (homestay): THB 72,000 per semester
- Grades 7 – 12: THB 62,000 per semester
- Weekend boarding (local students): THB 500 per day
- Vacation dormitory use: THB 1,500 per day
- Overseas student weekend programme: THB 25,000

Refund Policy
- 80% refund before semester starts
- 50% refund within the first 2 weeks (10 working days)
- No refund after the second week or for dismissal due to serious misconduct
- Deposits refunded only if claimed within one year of withdrawal and after all accounts are settled.

Payment Options
Payments can be made by cashier’s check (to Mater Amabilis Co., Ltd.), bank transfer, or Visa/MasterCard through the school’s finance office. A 1.4% fee applies to card payments. Late payments are charged THB 100 per day, capped at THB 5,000.
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Academics

Saint John Mary International School teaches American Curriculum for students aged 2 to 18.

Curriculum
Saint John Mary International School follows the American Curriculum, aligned with the California State Standards. Instruction is delivered in English across all levels, with Thai taught as a compulsory subject and Mandarin offered through extracurricular activities. The school provides early years education from Nursery and Kindergarten, followed by Elementary (Grades 1–5), Middle School (Grades 6–8), and High School (Grades 9–12). In High School, students complete credit-based coursework required for graduation under the American system. The curriculum also incorporates STEAM activities, sports, arts, and community service as integral components of student development.

Academic calendar
Wellbeing

Social and Emotional Learning (SEL)
SJMIS states that it places a strong focus on students’ social and emotional needs, including during periods of online learning. Student support services, specifically ELD, IEP, and counseling, remain available when learning shifts online. These pages indicate SEL is considered in planning and delivery rather than a one-off activity. Families are connected to teachers via the school’s listed platforms to support this.

Special Educational Needs (SEN)
The Elementary page describes Individualized Education Plans (IEPs) for learners with special needs. It notes that students on an IEP learn with both the homeroom teacher and a special education teacher, and that a shadow teacher may be required when appropriate. This indicates SEN support is integrated within mainstream classes. The Online Learning page also lists IEP among services maintained during remote learning. The site does not describe SJMIS as a specialist SEN school.

English as an Additional Language (EAL)
SJMIS runs an English Language Development (ELD) program as part of the Elementary Reading Program. It targets beginners or learners needing support, delivered in small groups to build foundational reading skills and close achievement gaps with cooperation between school and families. The Online Learning page confirms ELD continues during online schooling.

Mental Wellbeing
The school lists counseling among student support services and highlights a strong focus on students’ social and emotional needs. These provisions are explicitly mentioned as continuing when learning is online. The site does not provide further public details about the counseling staff or referral processes.

Safeguarding
SJMIS’s Privacy Policy says CCTV is installed across campus, including in Kindergarten classrooms, with footage retained for 14 days, and that information may be shared with the Police where there are child protection or safeguarding concerns. The Employment page adds that the school’s top priority is children’s health, safety, and protection, and that recruitment emphasizes readiness to care for students. The site does not publish a standalone child protection policy beyond these statements.
Parent Experience

History
Saint John Mary International School was established in 2004. The school is privately owned and operates under the license of the Thai Ministry of Education. It later obtained international accreditation through WASC (Western Association of Schools and Colleges), which recognizes schools that meet US-based educational standards. Over the years, SJMIS has expanded to offer education from Nursery through Grade 12 and has developed facilities to support academics, sports, and extracurricular programs.

Community
The school community places emphasis on cultural and service-oriented activities. Students regularly take part in community service projects, such as temple cleaning and tree planting, which build links with the wider Saraburi community. Annual cultural celebrations, including International Day and Thai national holidays like Father’s Day merit-making ceremonies, bring together students, parents, and teachers in shared traditions.

Parent Teacher Association (PTA)
Parent Teacher Association (PTA)
The school maintains an active partnership with parents through its PTA. Parents are often involved in organizing and supporting school-wide celebrations, such as International Day, where families contribute food and cultural displays. During community service events, parents also participate alongside students, strengthening the school’s connection with the local area. The PTA helps coordinate volunteer opportunities and provides assistance for extracurricular and cultural programs. Through these activities, the PTA contributes to a collaborative environment where families play a direct role in enriching the student experience.
Gallery
Facilities

Facilities Overview
Boarding facilities include two dormitory buildings and ten homestay houses. Rooms accommodate 3 to 6 students and are air conditioned with fitted wardrobes and bunk beds. The dormitories provide ground-floor multipurpose rooms and a kitchen. The boarding complex includes a swimming pool, basketball court, volleyball court, and a golf range. The campus is located at 131 Moo.1, Phahonyothin Road, Nongyao, Saraburi 18000, Thailand.

Sports Facilities
Within the boarding complex there is a swimming pool, a basketball court, a volleyball court, and a golf range. These facilities support recreational and curricular activities for boarders and day students.

Academic Facilities
Advanced Placement (AP) courses are offered, with AP Exams conducted in May. The school hosts TOEFL iBT test centers, SAT test centers, and HSK Chinese Proficiency Test on campus. English is the primary language of instruction, with English-language development support for non-native speakers.

Extra Curricular Facilities
Summer School 2025 offers STEAM-based learning, a Grade Improvement Program in core subjects, and includes field trips. The school runs an After School Program (ASP). The gallery shows events such as KG Sports Day, Loy Krathong Festival, Winter Wonderland Fair, Prom Night, and various field trips.
Extra-Curricular Activities

Academic & Intellectual
Saint John Mary International School is recognized by the Thai Ministry of Education as an institution of international status offering Pre-kindergarten through Grade 12. It is fully accredited by the Western Association of Schools and Colleges (WASC).

Cultural & Language
The school emphasizes English proficiency within its American-standard curriculum. Thai language and culture are taught by three experienced Thai teachers, and the school offers Chinese language testing programs (HSK/YCT).

Community & Service
The Secondary School requires 40 hours of community service over four years, with an optional 100-hour Helping Hand Award for extended service. The curriculum also highlights leadership development and an emphasis on collaboration across diverse backgrounds.

Leadership & Professional
Leadership opportunities are provided as part of the secondary program; students participate in school-wide leadership activities, and the school promotes global-minded development through its programs and university destinations.

Lifestyle & Wellbeing
The campus supports athletic and recreational activities; SJMIS is a member of the International Schools Athletics Association and offers facilities such as a golf range, tennis courts, football field, swimming pool, basketball, badminton, and volleyball courts.
Languages

Language Provision
English is the primary language of instruction, with all classes conducted in English except Thai language and culture classes. The elementary curriculum includes Mandarin as a subject. Thai language and culture are taught as part of the program. English Language Development (ELD) supports beginner English learners, and an Individualized Education Plan (IEP) supports students with special needs.
Reputation

Accreditations
Ministry of Education, Thailand: Grants the school its license to operate as a registered international school in Thailand.

WASC (Western Association of Schools and Colleges): A US-based accreditation agency that evaluates schools worldwide to ensure they meet recognized standards of educational quality and institutional improvement.
Admissions

Admissions
1. Families begin by contacting the school to request information or by submitting an application form. At this stage, parents are typically asked to provide documents such as copies of the child’s birth certificate, passport, and recent school records. The school also requests photographs and medical history to complete the application file.

2. Students may be invited for an entrance assessment or interview to determine placement, especially for those entering higher grades or requiring English support. Younger children may be observed in a classroom setting to assess readiness. This step helps the school ensure that students are placed in an age-appropriate and academically suitable program.

3. If the student meets the entry requirements, the school issues an offer letter confirming placement. Parents are asked to review the offer and accept within a given timeframe. Acceptance at this stage also depends on space availability within the grade.

4. Once the offer is accepted, families must pay the one-time registration fee, refundable deposit, and the first semester’s tuition. Proof of payment is required to finalize enrollment. Failure to pay within the deadline may result in the place being released to another applicant.

5. After fees are settled, the child is officially enrolled. Parents receive details about uniform purchase, transportation options, and orientation schedules. The school provides information on first-day procedures and introduces families to key points of contact, such as homeroom teachers and the admissions office.

Scholarships
The school does not publicly disclose any scholarship programmes or financial aid schemes. No details are available regarding eligibility criteria, application procedures, or coverage.

Waitlist
SJMIS does not publicly disclose information on operating a waitlist or pool system.
School Events
The school has not added events
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