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Official entrance age to upper secondary education in Tonga

Tonga: Official entrance age to upper secondary education was 16 years in 2025. ▲ Rising

Latest (2025)
16 years
Change on year
unchanged
World rank
10th
of 215 countries
All-time high
17 years
in 2012
All-time low
15 years
in 1984
Years of data
56
1970–2025

Official entrance age to upper secondary education in Tonga, 1970–2025

051015197019972025

Source: UNESCO Institute for Statistics. Measured in years.

Analysis

The most recent figure for official entrance age to upper secondary education in Tonga is 16 years, measured in 2025.

That represents a change of down 5.9% over ten years.

Over the whole period, official entrance age to upper secondary education in Tonga peaked at 17 years in 2012 and was at its lowest, 15 years, in 1984.

That places Tonga 10th out of 215 countries with data for 2025, putting it in the top 10%.

The long-run direction has been consistently rising across the 56 years of available data.

Official entrance age to upper secondary education in Tonga, year by year

Year years Change
1970 16 years —
1971 16 years +0.0%
1972 16 years +0.0%
1973 16 years +0.0%
1974 16 years +0.0%
1975 16 years +0.0%
1976 16 years +0.0%
1977 16 years +0.0%
1978 16 years +0.0%
1979 16 years +0.0%
1980 16 years +0.0%
1981 16 years +0.0%
1982 16 years +0.0%
1983 16 years +0.0%
1984 15 years -6.2%
1985 15 years +0.0%
1986 15 years +0.0%
1987 15 years +0.0%
1988 15 years +0.0%
1989 15 years +0.0%
1990 15 years +0.0%
1991 15 years +0.0%
1992 15 years +0.0%
1993 15 years +0.0%
1994 15 years +0.0%
1995 15 years +0.0%
1996 15 years +0.0%
1997 15 years +0.0%
1998 15 years +0.0%
1999 15 years +0.0%
2000 15 years +0.0%
2001 15 years +0.0%
2002 15 years +0.0%
2003 15 years +0.0%
2004 15 years +0.0%
2005 15 years +0.0%
2006 15 years +0.0%
2007 15 years +0.0%
2008 15 years +0.0%
2009 15 years +0.0%
2010 15 years +0.0%
2011 15 years +0.0%
2012 17 years +13.3%
2013 17 years +0.0%
2014 17 years +0.0%
2015 17 years +0.0%
2016 17 years +0.0%
2017 17 years +0.0%
2018 17 years +0.0%
2019 17 years +0.0%
2020 17 years +0.0%
2021 17 years +0.0%
2022 17 years +0.0%
2023 16 years -5.9%
2024 16 years +0.0%
2025 16 years +0.0%

Averages by decade

DecadeAverage LowestHighest Years
1970s 16 years 16 years 16 years 10
1980s 15.4 years 15 years 16 years 10
1990s 15 years 15 years 15 years 10
2000s 15 years 15 years 15 years 10
2010s 16.6 years 15 years 17 years 10
2020s 16.5 years 16 years 17 years 6

Countries ranked near Tonga

  1. 10 Afghanistan 16 years compare
  2. 10 Andorra 16 years compare
  3. 10 American Samoa 16 years compare
  4. 10 Australia 16 years compare
  5. 10 Benin 16 years compare
  6. 10 Burkina Faso 16 years compare
  7. 10 Bhutan 16 years compare
  8. 10 Botswana 16 years compare
  9. 10 Central African Republic 16 years compare
  10. 10 Côte d'Ivoire 16 years compare
  11. 10 Cameroon 16 years compare
  12. 10 Congo 16 years compare
  13. 10 Curaçao 16 years compare
  14. 10 Germany 16 years compare
  15. 10 Denmark 16 years compare
  16. 10 Estonia 16 years compare
  17. 10 Finland 16 years compare
  18. 10 Fiji 16 years compare
  19. 10 Gambia 16 years compare
  20. 10 Guatemala 16 years compare
  21. 10 Indonesia 16 years compare
  22. 10 Ireland 16 years compare
  23. 10 Iceland 16 years compare
  24. 10 Jordan 16 years compare
  25. 10 Kyrgyzstan 16 years compare
  26. 10 Liechtenstein 16 years compare
  27. 10 Lesotho 16 years compare
  28. 10 Latvia 16 years compare
  29. 10 Republic of Moldova 16 years compare
  30. 10 Maldives 16 years compare
  31. 10 Mali 16 years compare
  32. 10 Mozambique 16 years compare
  33. 10 Mauritania 16 years compare
  34. 10 Malawi 16 years compare
  35. 10 Norway 16 years compare
  36. 10 Naoero 16 years compare
  37. 10 Oman 16 years compare
  38. 10 Philippines 16 years compare
  39. 10 Russian Federation 16 years compare
  40. 10 Senegal 16 years compare
  41. 10 El Salvador 16 years compare
  42. 10 Suriname 16 years compare
  43. 10 Sweden 16 years compare
  44. 10 Eswatini 16 years compare
  45. 10 Chad 16 years compare
  46. 10 Togo 16 years compare
  47. 10 Tajikistan 16 years compare
  48. 10 Turkmenistan 16 years compare
  49. 10 Tuvalu 16 years compare
  50. 10 Uzbekistan 16 years compare
  51. 10 Vanuatu 16 years compare
  52. 10 South Africa 16 years compare
  53. 10 Zambia 16 years compare

See the full ranking of 221 places →

More education data for Tonga

All data for Tonga →

Frequently asked questions

What is official entrance age to upper secondary education in Tonga?
Official entrance age to upper secondary education in Tonga was 16 years in 2025, according to UNESCO Institute for Statistics.
What is the highest official entrance age to upper secondary education recorded in Tonga?
The highest recorded value was 17 years in 2012.
What is the lowest official entrance age to upper secondary education recorded in Tonga?
The lowest recorded value was 15 years in 1984.
How does Tonga rank for official entrance age to upper secondary education?
Tonga ranks 10th out of 215 countries with data for 2025.
Is official entrance age to upper secondary education rising or falling in Tonga?
Over the last ten years it is down 5.9%. The long-run trend across the full record is rising.
Where does this Tonga data come from?
The figures come from UNESCO Institute for Statistics, published as part of Official entrance age to upper secondary education (years). Statizoid updates them automatically from the source API.

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Official entrance age to upper secondary education in Tonga. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 26 August 2026, from https://education.statizoid.com/stat/official-entrance-age-to-upper-secondary-education-years-2/tonga/

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About this data

Indicator
Official entrance age to upper secondary education (years)
Unit
years
Source
UNESCO Institute for Statistics
Licence
CC BY-SA 3.0 IGO (UNESCO Institute for Statistics)
Coverage
221 places, 11,823 data points, 1970–2025
Last refreshed

February 2026 Data Release