School age population, upper secondary education, both sexes in Thailand
Thailand: School age population, upper secondary education, both sexes was 2.36 million in 2025. ▲ Rising
Latest (2025)
2.36 million
Change on year
down 1.9%
World rank
31st
of 220 countries
All-time high
3.58 million
in 1989
All-time low
1.47 million
in 1970
Years of data
56
1970–2025
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 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% |
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
- Theoretical duration of pre-primary education (years), annual growth 0 % change on previous year (2025)
- Start of the academic school year (pre-primary to post-secondary non) 0.0494 % change on previous year (2025)
- Theoretical duration of lower secondary education (years), annual 0 % change on previous year (2025)
- Theoretical duration of upper secondary education (years), annual 0 % change on previous year (2025)
- Theoretical duration of secondary education (years), annual growth 0 % change on previous year (2025)
- 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)
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