World Bank · Education
Tonga: Secondary education, duration
7years · 20250.0% since 2015
Secondary duration refers to the number of grades (years) in secondary school. Annual figures for Tonga from 1970 to 2025.
Every year
| Year | Value (years) | Note |
|---|---|---|
| 2025 | 7 | |
| 2024 | 7 | |
| 2023 | 7 | |
| 2022 | 7 | |
| 2021 | 7 | |
| 2020 | 7 | |
| 2019 | 7 | |
| 2018 | 7 | |
| 2017 | 7 | |
| 2016 | 7 | |
| 2015 | 7 | |
| 2014 | 7 | |
| 2013 | 7 | |
| 2012 | 7 | |
| 2011 | 6 | |
| 2010 | 6 | |
| 2009 | 6 | |
| 2008 | 6 | |
| 2007 | 6 | |
| 2006 | 6 | |
| 2005 | 6 | |
| 2004 | 6 | |
| 2003 | 6 | |
| 2002 | 6 | |
| 2001 | 6 | |
| 2000 | 6 | |
| 1999 | 6 | |
| 1998 | 6 | |
| 1997 | 7 | |
| 1996 | 7 | |
| 1995 | 7 | |
| 1994 | 7 | |
| 1993 | 7 | |
| 1992 | 7 | |
| 1991 | 7 | |
| 1990 | 7 | |
| 1989 | 7 | |
| 1988 | 7 | |
| 1987 | 7 | |
| 1986 | 7 | |
| 1985 | 7 | |
| 1984 | 7 | |
| 1983 | 6 | |
| 1982 | 6 | |
| 1981 | 6 | |
| 1980 | 6 | |
| 1979 | 6 | |
| 1978 | 6 | |
| 1977 | 6 | |
| 1976 | 6 | |
| 1975 | 6 | |
| 1974 | 6 | |
| 1973 | 6 | |
| 1972 | 6 | |
| 1971 | 6 | |
| 1970 | 6 |
Source
Published by World Bank, produced by UNESCO. Licence: CC BY 4.0. Retrieved 2026-11-08.
The dataset for every country, with quality and provenance →
Cite or download
World Bank (2026). Secondary education, duration. Interva. https://interva.co/dataset/worldbank-secondary-education-duration (accessed 2026-11-14). catalog snapshot 2026-11-08.
Secondary education, duration in other countries
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