Thailand's secondary education, pupils was 4.26 million in 2025, the latest year in the World Bank's World Development Indicators. That is down 36.98% from 6.76 million in 2015 (4.51% a year on average, compounded).
Key figures
| Value | Year | |
|---|---|---|
| Latest | 4.26 million | 2025 |
| Five years earlier | 4.13 million | 2020 |
| Ten years earlier | 6.76 million | 2015 |
| Highest | 6.79 million | 2014 |
| Lowest | 695,023 | 1971 |
| Average since 2016 | 4.47 million | 2016–2025 |
| First recorded | 695,023 |
What the numbers say
In 2025, Thailand's secondary education, pupils fell 1.6% on 2024 (from 4.33 million to 4.26 million).
Across the 30 yearly changes before that (1990 to 2024), the average change was +3.1% and a typical year strayed about 11.7% from that (the standard deviation). This year's change was 0.4 standard deviations below that average, so it was an ordinary year: it sits within the range of normal year-to-year movement.
On record, the biggest yearly rise was 45.9% in 2014 and the biggest yearly fall was 36.1% in 2017. The numbers show how large and when, not why; for the cause, look at what happened in that country in those years.
From 2016 to 2025 there is no clear straight-line trend: a straight line explains 21% of the movement over 10 observed years, so the value is moving around more than it is heading anywhere.
Worked out from the yearly values above. How the checks work: standard deviation, z-scores and straight-line trends.
How it compares
See how every economy compares in the full ranking.
| Value | Year | |
|---|---|---|
| Thailand | 4.26 million | 2025 |
| World | 651.68 million | 2024 |
| East Asia & Pacific | 174.05 million | 2024 |
| Upper middle income | 233.28 million | 2024 |
Closest to Thailand in the 2025 ranking
- India — 1st of 9: 133.16 million
- Indonesia — 2nd of 9: 27.84 million
- Uzbekistan — 3rd of 9: 4.36 million
- Kazakhstan — 5th of 9: 2.57 million
- Kyrgyz Republic — 6th of 9: 909,619
- Burundi — 7th of 9: 590,027
What this measures
Secondary education pupils is the total number of pupils enrolled at secondary level in public and private schools.
Regional and income-group figures are computed by the World Bank as a sum.
All 51 values
| Year | Secondary education, pupils |
|---|---|
| 2025 | 4,258,423 |
| 2024 | 4,327,637 |
| 2023 | 4,424,066 |
| 2022 | 4,257,765 |
| 2021 | 4,170,797 |
| 2020 | 4,132,033 |
| 2019 | 4,172,741 |
| 2018 | 4,186,904 |
| 2017 | 4,198,078 |
| 2016 | 6,570,988 |
| 2015 |
Secondary education, pupils in nearby economies
- Australia — 2.65 million (2024)
- Brunei Darussalam — 40,924 (2023)
- Cambodia — 1.17 million (2024)
- China — 97.98 million (2024)
- Fiji — 113,613 (2024)
- Hong Kong SAR, China — 340,877 (2024)
- Indonesia — 27.84 million (2025)
- Japan — 6.61 million (2023)
- Kiribati — 16,846 (2024)
- Korea, Rep. — 2.66 million (2024)
- Lao PDR — 532,092 (2025)
More education data for Thailand
- Primary school starting age (years) — 6 (2025)
- Primary education, duration (years) — 6 (2025)
- Lower secondary school starting age (years) — 12 (2025)
- Secondary education, duration (years) — 6 (2025)
- Primary education, pupils — 4.45 million (2025)
- School enrollment, primary (% gross) — 100.73% (2025)
- School enrollment, secondary (% gross) — 92.09% (2025)
- School enrollment, tertiary (% gross) — 49.08% (2025)
- Government expenditure on education, total (% of GDP) — 2.52% (2023)
- Secondary education, general pupils
Reading data like this
Questions people ask
- What is Thailand's secondary education, pupils?
- 4.26 million in 2025, according to the World Bank (World Development Indicators).
- How has it changed since 1971?
- It is up 512.7% from 695,023 in 1971 (3.41% a year on average, compounded). The highest value was 6.79 million in 2014 and the lowest 695,023 in 1971.
- Is the latest change in secondary education, pupils unusual for Thailand?
- In 2025, Thailand's secondary education, pupils fell 1.6% on 2024 (from 4.33 million to 4.26 million). Across the 30 yearly changes before that (1990 to 2024), the average change was +3.1% and a typical year strayed about 11.7% from that (the standard deviation). This year's change was 0.4 standard deviations below that average, so it was an ordinary year: it sits within the range of normal year-to-year movement.
- Where does this data come from?
- The World Bank's World Development Indicators, licensed CC BY 4.0. Original source: Data API, UN Educational, Scientific and Cultural Organization (UNESCO), uri: https://databrowser.uis.unesco.org/resources, note: The data are obtained through the UIS API..
Source
World Bank, World Development Indicators, indicator SE.SEC.ENRL, licensed CC BY 4.0. Original source: Data API, UN Educational, Scientific and Cultural Organization (UNESCO), uri: https://databrowser.uis.unesco.org/resources, note: The data are obtained through the UIS API. Figures are fetched from the World Bank API and refreshed monthly; see the series on data.worldbank.org. The full definition and method are in the World Bank's metadata glossary. Comparisons use the same World Bank release.
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