How many years of comparable data are there for Algeria and Tanzania, United Republic of?

51 years are reported by both, from 1970 to 2020.

Where does this data come from?

UNESCO Institute for Statistics, published as Theoretical duration of lower secondary education (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Algeria vs Tanzania, United Republic of: Theoretical duration of lower secondary education

Algeria

4 years

in 2020

Tanzania, United Republic of

4 years

in 2020

Algeria rank

18th

Tanzania, United Republic of rank

18th

Theoretical duration of lower secondary education over time

Algeria
Tanzania, United Republic of

How they compare

Algeria currently reports 4 years against 4 years in Tanzania, United Republic of, a difference of 0 years.

Across all 51 years both countries report, Tanzania, United Republic of has been ahead every year.

Algeria ranks 18th and Tanzania, United Republic of ranks 18th of 209 countries.

Tanzania, United Republic of has averaged higher in every one of the 6 decades both report.

Head to head by decade

Decade	Algeria	Tanzania, United Republic of	Difference	Ahead
1970s	3.9 years	4 years	0.1 years	Tanzania, United Republic of
1980s	3.9 years	4 years	0.1 years	Tanzania, United Republic of
1990s	3 years	4 years	1 years	Tanzania, United Republic of
2000s	3.3 years	4 years	0.7 years	Tanzania, United Republic of
2010s	4 years	4 years	0 years	—
2020s	4 years	4 years	0 years	—

Averages of every year both report within each decade.

Frequently asked questions

Which has higher theoretical duration of lower secondary education, Algeria or Tanzania, United Republic of?: Algeria, at 4 years against 4 years in Tanzania, United Republic of as of 2020.
What is the difference in theoretical duration of lower secondary education between Algeria and Tanzania, United Republic of?: 0 years, with Algeria ahead.
How many years of comparable data are there for Algeria and Tanzania, United Republic of?: 51 years are reported by both, from 1970 to 2020.
How do Algeria and Tanzania, United Republic of rank globally for theoretical duration of lower secondary education?: Algeria ranks 18th and Tanzania, United Republic of ranks 18th of 209 countries.
Where does this data come from?: UNESCO Institute for Statistics, published as Theoretical duration of lower secondary education (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Algeria vs Tanzania, United Republic of: Theoretical duration of lower secondary education. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 03 September 2026, from https://education.statizoid.com/compare/theoretical-duration-of-lower-secondary-education-years/algeria/tanzania/

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About this data

Indicator: Theoretical duration of lower secondary education (years)
Unit: years
Source: UNESCO Institute for Statistics
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 209 places, 10,366 data points, 1970–2020
Last refreshed: 21 August 2026

Number of grades (years) in lower secondary education.