UIS · Education
Tonga: Theoretical duration of lower secondary education
4years · 2025-20.0% since 2015
Theoretical duration of lower secondary education (years). UNESCO Institute for Statistics indicator 999976. Annual figures for Tonga from 2000 to 2025.
Every year
| Year | Value (years) | Note |
|---|---|---|
| 2025 | 4 | |
| 2024 | 4 | |
| 2023 | 4 | |
| 2022 | 5 | |
| 2021 | 5 | |
| 2020 | 5 | |
| 2019 | 5 | |
| 2018 | 5 | |
| 2017 | 5 | |
| 2016 | 5 | |
| 2015 | 5 | |
| 2014 | 5 | |
| 2013 | 5 | |
| 2012 | 5 | |
| 2011 | 4 | |
| 2010 | 4 | |
| 2009 | 4 | |
| 2008 | 4 | |
| 2007 | 4 | |
| 2006 | 4 | |
| 2005 | 4 | |
| 2004 | 4 | |
| 2003 | 4 | |
| 2002 | 4 | |
| 2001 | 4 | |
| 2000 | 4 |
Source
Published by UIS, produced by UNESCO Institute for Statistics. Licence: CC BY-SA 3.0 IGO. Retrieved 2026-11-07.
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Cite or download
UIS (2026). Theoretical duration of lower secondary education. Interva. https://interva.co/dataset/uis-999976 (accessed 2026-11-08). catalog snapshot 2026-11-07.
Theoretical duration of lower secondary education in other countries
- Afghanistan
- Albania
- Algeria
- American Samoa
- Andorra
- Angola
- Anguilla
- Antigua and Barbuda
- Argentina
- Armenia
- Aruba
- Australia
- Austria
- Azerbaijan
- Bahamas
- Bahrain
- Bangladesh
- Barbados
- Belarus
- Belgium
- Belize
- Benin
- Bermuda
- Bhutan
- Bolivia, Plurinational State of
- Bosnia and Herzegovina
- Botswana
- Brazil
- Brunei Darussalam
- Bulgaria
- Burkina Faso
- Burundi
- Cabo Verde
- Cambodia
- Cameroon
- Canada
- Cayman Islands
- Central African Republic
- Chad
- Chile
- China
- Colombia
- Comoros
- Congo
- Congo, The Democratic Republic of the
- Cook Islands
- Costa Rica
- Côte d'Ivoire
- Croatia
- Cuba
- Curaçao
- Cyprus
- Czechia
- Denmark
- Djibouti
- Dominica
- Dominican Republic
- Ecuador
- Egypt
- El Salvador
- Equatorial Guinea
- Eritrea
- Estonia
- Eswatini
- Ethiopia
- Fiji
- Finland
- France
- French Guiana
- French Polynesia
- Gabon
- Gambia
- Georgia
- Germany
- Ghana
- Gibraltar
- Greece
- Grenada
- Guadeloupe
- Guatemala
- Guinea
- Guinea-Bissau
- Guyana
- Haiti
- Honduras
- Hong Kong
- Hungary
- Iceland
- India
- Indonesia
- Iran, Islamic Republic of
- Iraq
- Ireland
- Israel
- Italy
- Jamaica
- Japan
- Jordan
- Kazakhstan
- Kenya
- Kiribati
- Korea, Democratic People's Republic of
- Korea, Republic of
- Kuwait
- Kyrgyzstan
- Lao People's Democratic Republic
- Latvia
- Lebanon
- Lesotho
- Liberia
- Libya
- Liechtenstein
- Lithuania
- Luxembourg
- Macao
- Madagascar
- Malawi
- Malaysia
- Maldives
- Mali
- Malta
- Marshall Islands
- Martinique
- Mauritania
- Mauritius
- Mexico
- Micronesia, Federated States of
- Moldova, Republic of
- Monaco
- Mongolia
- Montenegro
- Montserrat
- Morocco
- Mozambique
- Myanmar
- Namibia
- Nauru
- Nepal
- Netherlands
- New Caledonia
- New Zealand
- Nicaragua
- Niger
- Nigeria
- Niue
- North Macedonia
- Norway
- Oman
- Pakistan
- Palau
- Palestine, State of
- Panama
- Papua New Guinea
- Paraguay
- Peru
- Philippines
- Poland
- Portugal
- Puerto Rico
- Qatar
- Réunion
- Romania
- Russian Federation
- Rwanda
- Saint Helena, Ascension and Tristan da Cunha
- Saint Kitts and Nevis
- Saint Lucia
- Saint Pierre and Miquelon
- Saint Vincent and the Grenadines
- Samoa
- San Marino
- Sao Tome and Principe
- Saudi Arabia
- Senegal
- Serbia
- Seychelles
- Sierra Leone
- Singapore
- Sint Maarten (Dutch part)
- Slovakia
- Slovenia
- Solomon Islands
- Somalia
- South Africa
- South Sudan
- Spain
- Sri Lanka
- Sudan
- Suriname
- Sweden
- Switzerland
- Syrian Arab Republic
- Tajikistan
- Tanzania, United Republic of
- Thailand
- Timor-Leste
- Togo
- Tokelau
- Trinidad and Tobago
- Tunisia
- Türkiye
- Turkmenistan
- Turks and Caicos Islands
- Tuvalu
- Uganda
- Ukraine
- United Arab Emirates
- United Kingdom
- United States
- Uruguay
- Uzbekistan
- Vanuatu
- Venezuela, Bolivarian Republic of
- Viet Nam
- Virgin Islands, British
- Virgin Islands, U.S.
- Western Sahara
- Yemen
- Zambia
- Zimbabwe
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