Pupil-qualified teacher ratio in lower secondary in Thailand
Thailand: Pupil-qualified teacher ratio in lower secondary was 18.4 headcount basis in 2025. ▼ Falling
Pupil-qualified teacher ratio in lower secondary in Thailand, 2015–2025
Source: UNESCO Institute for Statistics. Measured in headcount basis.
Analysis
In 2025, pupil-qualified teacher ratio in lower secondary in Thailand stood at 18.4 headcount basis.
Compared with earlier readings it is up 1.3% on the previous year and down 27.9% over ten years.
Over the whole period, pupil-qualified teacher ratio in lower secondary in Thailand peaked at 25.5 headcount basis in 2015 and was at its lowest, 17.05 headcount basis, in 2020.
Thailand ranks 34th of 69 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-qualified teacher ratio in lower secondary in Thailand, year by year
| Year | headcount basis | Change |
|---|---|---|
| 2015 | 25.5 headcount basis | — |
| 2016 | 25.33 headcount basis | -0.7% |
| 2017 | 18.11 headcount basis | -28.5% |
| 2018 | 18.08 headcount basis | -0.1% |
| 2019 | 19.17 headcount basis | +6.0% |
| 2020 | 17.05 headcount basis | -11.1% |
| 2021 | 19.81 headcount basis | +16.2% |
| 2022 | 18.91 headcount basis | -4.6% |
| 2023 | 20.69 headcount basis | +9.4% |
| 2024 | 18.17 headcount basis | -12.2% |
| 2025 | 18.4 headcount basis | +1.3% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 21.24 headcount basis | 18.08 headcount basis | 25.5 headcount basis | 5 |
| 2020s | 18.84 headcount basis | 17.05 headcount basis | 20.69 headcount basis | 6 |
Countries ranked near Thailand
More education data for Thailand
- 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)
- Primary secondary enrollment completion rates, gaps filled 100.73 (2025)
- School enrollment, primary 100.7% (2025)
Frequently asked questions
- What is pupil-qualified teacher ratio in lower secondary in Thailand?
- Pupil-qualified teacher ratio in lower secondary in Thailand was 18.4 headcount basis in 2025, according to UNESCO Institute for Statistics.
- What is the highest pupil-qualified teacher ratio in lower secondary recorded in Thailand?
- The highest recorded value was 25.5 headcount basis in 2015.
- What is the lowest pupil-qualified teacher ratio in lower secondary recorded in Thailand?
- The lowest recorded value was 17.05 headcount basis in 2020.
- How does Thailand rank for pupil-qualified teacher ratio in lower secondary?
- Thailand ranks 34th out of 69 countries with data for 2025.
- Is pupil-qualified teacher ratio in lower secondary rising or falling in Thailand?
- Over the last ten years it is down 27.9%. 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-qualified teacher ratio in lower secondary (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