What is the difference in theoretical duration of lower secondary education between American Samoa and Tanzania, United Republic of?

0 years, with American Samoa ahead.

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

15 years are reported by both, from 1989 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.

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

American Samoa

4 years

in 2020

Tanzania, United Republic of

4 years

in 2020

American Samoa rank

18th

Tanzania, United Republic of rank

18th

Theoretical duration of lower secondary education over time

American Samoa
Tanzania, United Republic of

How they compare

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

Across all 15 years both countries report, Tanzania, United Republic of has been ahead every year.

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

Tanzania, United Republic of has averaged higher in every one of the 4 decades both report.

Head to head by decade

Decade	American Samoa	Tanzania, United Republic of	Difference	Ahead
1980s	2 years	4 years	2 years	Tanzania, United Republic of
1990s	2.4 years	4 years	1.6 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, American Samoa or Tanzania, United Republic of?: American Samoa, 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 American Samoa and Tanzania, United Republic of?: 0 years, with American Samoa ahead.
How many years of comparable data are there for American Samoa and Tanzania, United Republic of?: 15 years are reported by both, from 1989 to 2020.
How do American Samoa and Tanzania, United Republic of rank globally for theoretical duration of lower secondary education?: American Samoa 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.

Individual pages

Share, cite or embed this page

Cite this page

American Samoa 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/american-samoa/tanzania/

Embed or link this data

Paste this into a page to link back to these figures. The data itself is free to reuse under CC BY 4.0 (World Bank Open Data); please keep the attribution.

<a href="https://education.statizoid.com/compare/theoretical-duration-of-lower-secondary-education-years/american-samoa/tanzania/">American Samoa vs Tanzania, United Republic of: Theoretical duration of lower secondary education</a> — Statizoid

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.