Republic of Korea vs Sao Tome and Principe: Theoretical duration of lower secondary education

Republic of Korea
3 years
in 2020
Sao Tome and Principe
3 years
in 2020
Republic of Korea rank
81st
Sao Tome and Principe rank
81st

Theoretical duration of lower secondary education over time

  • Republic of Korea
  • Sao Tome and Principe
012345197019952020

How they compare

Republic of Korea currently reports 3 years against 3 years in Sao Tome and Principe, a difference of 0 years.

The two have swapped places 2 times across 51 shared years of data; in 1970 it was Sao Tome and Principe ahead.

Republic of Korea ranks 81st and Sao Tome and Principe ranks 81st of 209 countries.

Across the 6 decades both report, Republic of Korea averaged higher in 1 and Sao Tome and Principe in 3.

Head to head by decade

Decade Republic of Korea Sao Tome and Principe Difference Ahead
1970s 3 years 4 years 1 years Sao Tome and Principe
1980s 3 years 4.2 years 1.2 years Sao Tome and Principe
1990s 3 years 4.7 years 1.7 years Sao Tome and Principe
2000s 3 years 2.4 years 0.6 years Republic of Korea
2010s 3 years 3 years 0 years
2020s 3 years 3 years 0 years

Averages of every year both report within each decade.

Frequently asked questions

Which has higher theoretical duration of lower secondary education, Republic of Korea or Sao Tome and Principe?
Republic of Korea, at 3 years against 3 years in Sao Tome and Principe as of 2020.
What is the difference in theoretical duration of lower secondary education between Republic of Korea and Sao Tome and Principe?
0 years, with Republic of Korea ahead.
How many years of comparable data are there for Republic of Korea and Sao Tome and Principe?
51 years are reported by both, from 1970 to 2020.
How do Republic of Korea and Sao Tome and Principe rank globally for theoretical duration of lower secondary education?
Republic of Korea ranks 81st and Sao Tome and Principe ranks 81st 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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Republic of Korea vs Sao Tome and Principe: Theoretical duration of lower secondary education. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 08 September 2026, from https://education.statizoid.com/compare/theoretical-duration-of-lower-secondary-education-years/korea-rep/sao-tome-and-principe/

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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

Number of grades (years) in lower secondary education.