Gross enrollment ratio in secondary education, regardless of age, as a share of the official secondary-age population. Source: World Bank — World Development Indicators. Retrieved 15 Oct 2026.
| Period | Secondary Enrollment |
|---|---|
| 2021 | 28.2% |
| 2020 | 30.9% |
| 2019 | 30.2% |
| 2018 | 28.6% |
| 2017 | 26.4% |
| 2016 | 25.6% |
| 2015 | 26.1% |
| 2014 | 29.6% |
| 2013 | 32.4% |
| 2010 | 31.9% |
27 countries carry a recent secondary school enrollment ratio figure. Each opens its own page with the history, the source and the API request.
165 of 207 indicators carry a figure for Tanzania, grouped by topic.