Thailand: Secondary education, teachers

Key figures

What the numbers say

In 2025, Thailand's secondary education, teachers fell 2.2% on 2024 (from 249,571 to 243,991).

Across the 22 yearly changes before that (1978 to 2024), the average change was +2.7% and a typical year strayed about 6.4% from that (the standard deviation). This year's change was 0.8 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 20.2% in 1978 and the biggest yearly fall was 12.3% in 2021. 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 1% 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.

Closest to Thailand in the 2025 ranking

• Indonesia — 2nd of 9: 1.35 million
• Uzbekistan — 3rd of 9: 452,226
• Poland — 4th of 9: 322,900
• Nepal — 6th of 9: 124,257
• Burundi — 7th of 9: 27,748
• Tuvalu — 8th of 9: 108

What this measures

Secondary education, teachers refers to the total number of teachers at secondary level, including full-time and part-time teachers.

Limitations: The precision of this indicator can be influenced by the enumeration method used, such as headcount or 'full-time equivalent' count of teachers.

Regional and income-group figures are computed by the World Bank as a sum.

All 31 values

Secondary education, teachers in nearby economies

• Brunei Darussalam — 5,040 (2023)
• Cambodia — 107,312 (2021)
• China — 7.41 million (2024)
• Hong Kong SAR, China — 31,678 (2024)
• Indonesia — 1.35 million (2025)
• Japan — 627,777 (2023)
• Kiribati — 969 (2024)
• Korea, Rep. — 233,046 (2024)
• Lao PDR — 35,584 (2022)
• Macao SAR, China — 2,938 (2024)
• Malaysia — 217,105 (2024)

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)
• Secondary education, pupils — 4.26 million (2025)
• School enrollment, secondary (% gross) — 92.09% (2025)
• School enrollment, tertiary (% gross) — 49.08% (2025)
• Government expenditure on education, total (% of GDP)

Reading data like this

• Where to find free public data, and how to check it before you trust it — 2 min read
• Data analysis examples: 6 worked from one dataset — 3 min read
• Real change or random noise? A plain guide to reading your numbers — 2 min read

Questions people ask

What is Thailand's secondary education, teachers?

243,991 in 2025, according to the World Bank (World Development Indicators).

How has it changed since 1971?

It is up 445.16% from 44,756 in 1971 (3.19% a year on average, compounded). The highest value was 249,571 in 2024 and the lowest 42,336 in 1974.

Is the latest change in secondary education, teachers unusual for Thailand?

In 2025, Thailand's secondary education, teachers fell 2.2% on 2024 (from 249,571 to 243,991). Across the 22 yearly changes before that (1978 to 2024), the average change was +2.7% and a typical year strayed about 6.4% from that (the standard deviation). This year's change was 0.8 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.TCHR, 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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