Pupil-trained teacher ratio in upper secondary education in Thailand
Thailand: Pupil-trained teacher ratio in upper secondary education was 16.49 headcount basis in 2025. ▼ Falling
Pupil-trained teacher ratio in upper secondary education in Thailand, 2015–2025
Source: UNESCO Institute for Statistics. Measured in headcount basis.
Analysis
Thailand recorded 16.49 headcount basis for pupil-trained teacher ratio in upper secondary education in 2025.
Compared with earlier readings it is down 47.2% over ten years.
Over the whole period, pupil-trained teacher ratio in upper secondary education in Thailand peaked at 31.23 headcount basis in 2015 and was at its lowest, 16.49 headcount basis, in 2024.
Thailand ranks 35th of 77 countries on this measure, in the middle of the range.
The long-run direction has been consistently falling across the 11 years of available data.
Pupil-trained teacher ratio in upper secondary education in Thailand, year by year
| Year | headcount basis | Change |
|---|---|---|
| 2015 | 31.23 headcount basis | — |
| 2016 | 28.08 headcount basis | -10.1% |
| 2017 | 27.51 headcount basis | -2.0% |
| 2018 | 27.14 headcount basis | -1.3% |
| 2019 | 26.87 headcount basis | -1.0% |
| 2020 | 24.79 headcount basis | -7.8% |
| 2021 | 18.44 headcount basis | -25.6% |
| 2022 | 18.23 headcount basis | -1.2% |
| 2023 | 18.35 headcount basis | +0.6% |
| 2024 | 16.49 headcount basis | -10.1% |
| 2025 | 16.49 headcount basis | +0.0% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 28.17 headcount basis | 26.87 headcount basis | 31.23 headcount basis | 5 |
| 2020s | 18.8 headcount basis | 16.49 headcount basis | 24.79 headcount basis | 6 |
Countries ranked near Thailand
- 32 Mauritania 18.62 headcount basis compare
- 33 Marshall Islands 17.63 headcount basis compare
- 34 Mexico 16.94 headcount basis
- 36 Lao People's Democratic Republic 16.32 headcount basis compare
- 37 Morocco 15.96 headcount basis compare
- 38 Palestine, State of 15.3 headcount basis compare
More education data for Thailand
- Start of the academic school year (tertiary education), gaps filled 2,023 tertiary education (2024)
- Start of the academic school year (tertiary education), annual growth 0.0495 % change on previous year (2024)
- Primary education, teachers, gaps filled 305,368 (2025)
- Duration of pre primary education, annual growth rate 0 % change on previous year (2025)
- Duration of pre primary education 3 (2025)
- Official entrance age to pre primary education 3 (2025)
- Population ages 15-64 69.6% (2025)
- Population ages 0-14 14.4% (2025)
- Lower secondary school starting age 12 years (2025)
- Primary school starting age 6 years (2025)
Frequently asked questions
- What is pupil-trained teacher ratio in upper secondary education in Thailand?
- Pupil-trained teacher ratio in upper secondary education in Thailand was 16.49 headcount basis in 2025, according to UNESCO Institute for Statistics.
- What is the highest pupil-trained teacher ratio in upper secondary education recorded in Thailand?
- The highest recorded value was 31.23 headcount basis in 2015.
- What is the lowest pupil-trained teacher ratio in upper secondary education recorded in Thailand?
- The lowest recorded value was 16.49 headcount basis in 2024.
- How does Thailand rank for pupil-trained teacher ratio in upper secondary education?
- Thailand ranks 35th out of 77 countries with data for 2025.
- Is pupil-trained teacher ratio in upper secondary education rising or falling in Thailand?
- Over the last ten years it is down 47.2%. 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 upper secondary education (headcount basis). Statizoid updates them automatically from the source API.
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CSV · JSON — 11 observations, free to reuse under CC BY-SA 3.0 IGO (UNESCO Institute for Statistics).
About this data
February 2026 Data Release