Pupil-trained teacher ratio in secondary education (headcount basis) in Thailand
Thailand: Pupil-trained teacher ratio in secondary education (headcount basis) was 17.45 headcount basis in 2025. ▼ Falling
Pupil-trained teacher ratio in secondary education in Thailand, 2014–2025
Source: UNESCO Institute for Statistics. Measured in headcount basis.
Analysis
The most recent figure for pupil-trained teacher ratio in secondary education in Thailand is 17.45 headcount basis, measured in 2025.
The figure is up 0.7% on the previous year and down 38.0% over ten years.
Over the whole period, pupil-trained teacher ratio in secondary education in Thailand peaked at 29.54 headcount basis in 2014 and was at its lowest, 16.65 headcount basis, in 2020.
That places Thailand 48th out of 106 countries with data for 2025, putting it in the middle of the range.
The long-run direction has been consistently falling across the 12 years of available data.
Pupil-trained teacher ratio in secondary education (headcount basis) in Thailand, year by year
| Year | headcount basis | Change |
|---|---|---|
| 2014 | 29.54 headcount basis | — |
| 2015 | 28.15 headcount basis | -4.7% |
| 2016 | 26.63 headcount basis | -5.4% |
| 2017 | 26.37 headcount basis | -1.0% |
| 2018 | 25.95 headcount basis | -1.6% |
| 2019 | 26.25 headcount basis | +1.2% |
| 2020 | 16.65 headcount basis | -36.6% |
| 2021 | 19.16 headcount basis | +15.1% |
| 2022 | 18.59 headcount basis | -3.0% |
| 2023 | 19.54 headcount basis | +5.1% |
| 2024 | 17.34 headcount basis | -11.3% |
| 2025 | 17.45 headcount basis | +0.7% |
Thailand compared with similar countries
- Thailand's 17.45 headcount basis is above the median for upper middle income countries, which is 16.99 headcount basis, 1.0× the median. (32 countries reporting)
- Thailand's 17.45 headcount basis is above the median for East Asia & Pacific, which is 16.36 headcount basis, 1.1× the median. (15 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 27.15 headcount basis | 25.95 headcount basis | 29.54 headcount basis | 6 |
| 2020s | 18.12 headcount basis | 16.65 headcount basis | 19.54 headcount basis | 6 |
Countries ranked near Thailand
More education data for Thailand
- Teachers in secondary education, both sexes (number), gaps filled 243,991 (2025)
- Repeaters in primary education, all grades, both sexes (number), gaps 13,596 (2025)
- Enrolment in pre-primary education, male (number), gaps filled 758,147 (2025)
- Enrolment in pre-primary education, female (number), gaps filled 716,498 (2025)
- Secondary education, pupils, gaps filled 4.26 million (2025)
- Primary education, duration (years), annual growth rate 0 % change on previous year (2025)
- Primary education, pupils, gaps filled 4.45 million (2025)
- Primary education, pupils, annual growth rate -1.23 % change on previous year (2025)
- Primary education, pupils, per unit of GDP 0 units per US$ of GDP (2025)
- Primary education, pupils, per capita 0.0621 units per person (2025)
Frequently asked questions
- What is pupil-trained teacher ratio in secondary education in Thailand?
- Pupil-trained teacher ratio in secondary education in Thailand was 17.45 headcount basis in 2025, according to UNESCO Institute for Statistics.
- What is the highest pupil-trained teacher ratio in secondary education recorded in Thailand?
- The highest recorded value was 29.54 headcount basis in 2014.
- What is the lowest pupil-trained teacher ratio in secondary education recorded in Thailand?
- The lowest recorded value was 16.65 headcount basis in 2020.
- How does Thailand rank for pupil-trained teacher ratio in secondary education?
- Thailand ranks 48th out of 106 countries with data for 2025.
- Is pupil-trained teacher ratio in secondary education rising or falling in Thailand?
- Over the last ten years it is down 38.0%. The long-run trend across the full record is falling.
- Where does this Thailand data come from?
- The figures come from UNESCO Institute for Statistics, published as part of Pupil-trained teacher ratio in secondary education (headcount basis). Statizoid updates them automatically from the source API.
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CSV · JSON — 12 observations, free to reuse under CC BY-SA 3.0 IGO (UNESCO Institute for Statistics).
About this data
February 2026 Data Release