School age population, upper secondary education, both sexes (number) in Thailand
Thailand: School age population, upper secondary education, both sexes (number) was 2.36 million in 2025. ▲ Rising
School age population, upper secondary education, both sexes in Thailand, 1970–2025
Source: UNESCO Institute for Statistics.
Analysis
The most recent figure for school age population, upper secondary education, both sexes in Thailand is 2.36 million, measured in 2025.
The figure is down 1.9% on the previous year and down 15.2% over ten years.
Over the whole period, school age population, upper secondary education, both sexes in Thailand peaked at 3.58 million in 1989 and was at its lowest, 1.47 million, in 1970.
That places Thailand 31st out of 220 countries with data for 2025, putting it in the top quarter.
The long-run direction has been consistently rising across the 56 years of available data.
School age population, upper secondary education, both sexes (number) in Thailand, year by year
| Year | Value | Change |
|---|---|---|
| 1970 | 1.47 million | — |
| 1971 | 1.53 million | +4.1% |
| 1972 | 1.59 million | +3.7% |
| 1973 | 1.64 million | +3.4% |
| 1974 | 1.70 million | +3.3% |
| 1975 | 1.75 million | +3.3% |
| 1976 | 1.81 million | +3.3% |
| 1977 | 1.87 million | +3.1% |
| 1978 | 1.93 million | +3.2% |
| 1979 | 3.04 million | +57.5% |
| 1980 | 3.14 million | +3.3% |
| 1981 | 3.24 million | +3.1% |
| 1982 | 3.33 million | +2.8% |
| 1983 | 3.41 million | +2.4% |
| 1984 | 3.48 million | +2.2% |
| 1985 | 3.54 million | +1.7% |
| 1986 | 3.58 million | +0.9% |
| 1987 | 3.58 million | +0.1% |
| 1988 | 3.57 million | -0.2% |
| 1989 | 3.58 million | +0.2% |
| 1990 | 3.58 million | -0.1% |
| 1991 | 3.52 million | -1.6% |
| 1992 | 3.45 million | -1.9% |
| 1993 | 3.37 million | -2.5% |
| 1994 | 3.29 million | -2.1% |
| 1995 | 3.26 million | -1.2% |
| 1996 | 3.25 million | -0.1% |
| 1997 | 3.29 million | +1.0% |
| 1998 | 3.32 million | +1.2% |
| 1999 | 3.35 million | +0.7% |
| 2000 | 3.21 million | -4.2% |
| 2001 | 3.21 million | +0.0% |
| 2002 | 3.19 million | -0.6% |
| 2003 | 3.17 million | -0.6% |
| 2004 | 3.15 million | -0.6% |
| 2005 | 3.14 million | -0.3% |
| 2006 | 3.14 million | +0.1% |
| 2007 | 3.15 million | +0.3% |
| 2008 | 3.17 million | +0.5% |
| 2009 | 3.18 million | +0.2% |
| 2010 | 3.16 million | -0.5% |
| 2011 | 2.84 million | -10.3% |
| 2012 | 2.83 million | -0.2% |
| 2013 | 2.82 million | -0.5% |
| 2014 | 2.80 million | -0.6% |
| 2015 | 2.78 million | -0.8% |
| 2016 | 2.75 million | -1.1% |
| 2017 | 2.71 million | -1.3% |
| 2018 | 2.67 million | -1.5% |
| 2019 | 2.63 million | -1.6% |
| 2020 | 2.58 million | -1.7% |
| 2021 | 2.54 million | -1.7% |
| 2022 | 2.49 million | -1.8% |
| 2023 | 2.45 million | -1.8% |
| 2024 | 2.40 million | -1.9% |
| 2025 | 2.36 million | -1.9% |
Thailand compared with similar countries
- Thailand's 2.36 million is above the median for upper middle income countries, which is 248,478, 9.5× the median. (58 countries reporting)
- Thailand's 2.36 million is above the median for East Asia & Pacific, which is 92,651, 25.4× the median. (35 countries reporting)
Biggest year-on-year movements
Years where School age population, upper secondary education, both sexes (number) in Thailand changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1979 | +57.5% | 1.93 million | 3.04 million |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 1.83 million | 1.47 million | 3.04 million | 10 |
| 1980s | 3.44 million | 3.14 million | 3.58 million | 10 |
| 1990s | 3.37 million | 3.25 million | 3.58 million | 10 |
| 2000s | 3.17 million | 3.14 million | 3.21 million | 10 |
| 2010s | 2.80 million | 2.63 million | 3.16 million | 10 |
| 2020s | 2.47 million | 2.36 million | 2.58 million | 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 school age population, upper secondary education, both sexes in Thailand?
- School age population, upper secondary education, both sexes in Thailand was 2.36 million in 2025, according to UNESCO Institute for Statistics.
- What is the highest school age population, upper secondary education, both sexes recorded in Thailand?
- The highest recorded value was 3.58 million in 1989.
- What is the lowest school age population, upper secondary education, both sexes recorded in Thailand?
- The lowest recorded value was 1.47 million in 1970.
- How does Thailand rank for school age population, upper secondary education, both sexes?
- Thailand ranks 31st out of 220 countries with data for 2025.
- Is school age population, upper secondary education, both sexes rising or falling in Thailand?
- Over the last ten years it is down 15.2%. The long-run trend across the full record is rising.
- Where does this Thailand data come from?
- The figures come from UNESCO Institute for Statistics, published as part of School age population, upper secondary education, both sexes (number). Statizoid updates them automatically from the source API.
Download this data
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About this data
February 2026 Data Release