Pupil-qualified teacher ratio in upper secondary (headcount basis) in Thailand
Thailand: Pupil-qualified teacher ratio in upper secondary (headcount basis) was 16.49 headcount basis in 2025. ▼ Falling
Pupil-qualified teacher ratio in upper secondary in Thailand, 2015–2025
Source: UNESCO Institute for Statistics. Measured in headcount basis.
Analysis
In 2025, pupil-qualified teacher ratio in upper secondary in Thailand stood at 16.49 headcount basis.
That represents a change of down 47.2% over ten years.
Over the whole period, pupil-qualified teacher ratio in upper secondary in Thailand peaked at 31.23 headcount basis in 2015 and was at its lowest, 16.18 headcount basis, in 2020.
Thailand ranks 27th of 63 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 upper secondary (headcount basis) in Thailand, year by year
| Year | headcount basis | Change |
|---|---|---|
| 2015 | 31.23 headcount basis | — |
| 2016 | 28.08 headcount basis | -10.1% |
| 2017 | 16.78 headcount basis | -40.2% |
| 2018 | 16.52 headcount basis | -1.5% |
| 2019 | 17.14 headcount basis | +3.8% |
| 2020 | 16.18 headcount basis | -5.6% |
| 2021 | 18.44 headcount basis | +14.0% |
| 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% |
Thailand compared with similar countries
- Thailand's 16.49 headcount basis is above the median for upper middle income countries, which is 14.71 headcount basis, 1.1× the median. (22 countries reporting)
- Thailand's 16.49 headcount basis is below the median for East Asia & Pacific, which is 16.8 headcount basis, 98% of the median. (10 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 21.95 headcount basis | 16.52 headcount basis | 31.23 headcount basis | 5 |
| 2020s | 17.36 headcount basis | 16.18 headcount basis | 18.44 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-qualified teacher ratio in upper secondary in Thailand?
- Pupil-qualified teacher ratio in upper secondary in Thailand was 16.49 headcount basis in 2025, according to UNESCO Institute for Statistics.
- What is the highest pupil-qualified teacher ratio in upper secondary recorded in Thailand?
- The highest recorded value was 31.23 headcount basis in 2015.
- What is the lowest pupil-qualified teacher ratio in upper secondary recorded in Thailand?
- The lowest recorded value was 16.18 headcount basis in 2020.
- How does Thailand rank for pupil-qualified teacher ratio in upper secondary?
- Thailand ranks 27th out of 63 countries with data for 2025.
- Is pupil-qualified teacher ratio in upper secondary 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-qualified teacher ratio in upper 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