Company lists · Data refreshed November 2026

Top 15 Selective high schools based in Thailand

RevenueBase identified 25 company matches for selective high schools associated with Thailand as of November 2026 and tracks 1,074 professional contacts across them, including 158 with verified work emails. Bangkok is the largest hub.

This list covers company matches for selective high schools associated with Thailand, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
25Companies
1,074Contacts tracked
158Verified emails
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The 15 largest selective high schools based in Thailand

Ranked by team size
Top 15 of 25 company matches for selective high schools based in Thailand, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchDon Mueang, ThailandHQ recorded Nov 6, 2026201-500282 contacts →

Exact match

“Harrow International School Bangkok is organised into two sections: Lower School, which comprises the Early Years Centre (from Little Lions to K2) and the Pre Prep (Infants and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchBangkok, ThailandHQ recorded Nov 6, 2026201-500254 contacts →

Exact match

“Opened in 2003 and founded in the traditions of our UK sister school, Shrewsbury International School Bangkok Riverside is one of the leading independent schools in South East…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchNonthaburi, ThailandHQ recorded Nov 6, 202651-200124 contacts →

Exact match

“DBS Denla British School is a legacy of Denla Group, which has over 46 years of education expertise.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchSamae Dam, ThailandHQ recorded Nov 6, 202651-20067 contacts →

Exact match

“Opening in August 2019, BASIS International School Bangkok (BISB) is a part of the worldwide BASIS Curriculum Schools Network, America’s most successful academic network.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchWangchan, ThailandHQ recorded Nov 6, 202651-20049 contacts →

Exact match

“Kamnoetvidya Science Academy (KVIS) is a boarding school, offering a specialized curriculum that emphasizes mathematics, science and technology to students from grade 10 to 12.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchAmphoe Koh Samui, ThailandHQ recorded Nov 6, 202651-20031 contacts →

Exact match

“Fondly known as ISS, our school is British at its heart and achieves outstanding academic results across all ages.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchBangkok, ThailandHQ recorded Nov 6, 20261,001-5,00030 contacts →

Exact match

“Triam Udom Suksa School is a state school located in central Bangkok, Thailand.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchChiang Mai, ThailandHQ recorded Nov 6, 202651-20022 contacts →

Exact match

“Nakornpayap International School is a private, co-educational school located in Chiang Mai, Thailand.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchKhlong Luang, ThailandHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“An emphasis on rote learning and competition over understanding is a problem that has accumulated in the Thai educational system over the years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMuang Rayong, ThailandHQ recorded Nov 6, 20261,001-5,00020 contacts →

Exact match

“โรงเรียน ระยองวิทยาคม เกิดจากการรวมโรงเรียนเก่า 2 โรงเรียนเข้าด้วยกันคือ โรงเรียนระยองมิตรอุปถัมภ์ (ก่อตั้งเมื่อ พ.ศ.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBan Khlong Sai, ThailandHQ recorded Nov 6, 202611-5014 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBangkok, ThailandHQ recorded Nov 6, 202651-20014 contacts →

Exact match

“Our school is an extraordinary place of learning and discovery.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSurin, ThailandHQ recorded Nov 6, 20261,001-5,00013 contacts →

Exact match

“Sirindhorn School, Surin Province, located in the vibrant heart of Surin, Thailand, stands as a distinguished beacon of learning where academic excellence is harmoniously…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchBang Yi Khan, ThailandHQ recorded Nov 6, 202651-2008 contacts →

Exact match

“Thewphaingarm school (TPG) provides our pupils with a wide variety of subjects, taught by experienced and dedicated teachers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchHatyai, ThailandHQ recorded Nov 6, 202651-2002 contacts →

Exact match

“โรงเรียน มอ.วิทยานุสรณ์ (อังกฤษ: PSU.Wittayanusorn School) เป็นโรงเรียนวิทยาศาสตร์ ที่มีสถานภาพเป็นโรงเรียนเอกชนภายใต้การกำกับดูแลของมหาวิทยาลัยสงขลานครินทร์…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 15 of 25 selective high schools based in Thailand

See the full list, filter by size, metro and specialty, and access 158 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Selective high schools based in Thailand at a glance

As of Nov 6, 2026
14.7%Verified-email coverage
43.0Average contacts per company
51-200Median size (employees)
24.0%Largest-city concentration · Bangkok
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
2
11-50
2
51-200
12
201-500
3
501-1,000
1
1,001-5,000
5

Email recency for this list is measured worldwide rather than for Thailand, so it is reported there. Company counts and contact totals on this page are exact for Thailand, over 25 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Thailand whose business descriptions match “selective high schools” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 158 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “selective high schools”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many selective high schools are there based in Thailand?

RevenueBase identified 25 company matches for selective high schools associated with Thailand as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Harrow International School Bangkok tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most selective high schools?

Bangkok leads with 6 company records, followed by Rayong (3) and Bangkok City (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 158 professional contacts with verified work emails tracked across these 25 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.