How many years of comparable data are there for Brunei and Democratic Republic of Congo?

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.

Brunei vs Democratic Republic of Congo: Theoretical duration of lower secondary education

Brunei

2 years

in 2020

Democratic Republic of Congo

2 years

in 2020

Brunei rank

188th

Democratic Republic of Congo rank

188th

Theoretical duration of lower secondary education over time

Brunei
Democratic Republic of Congo

How they compare

Brunei currently reports 2 years against 2 years in Democratic Republic of Congo, a difference of 0 years.

The two have swapped places 1 time across 51 shared years of data; in 1970 it was Brunei ahead.

Brunei ranks 188th and Democratic Republic of Congo ranks 188th of 209 countries.

Brunei has averaged higher in every one of the 6 decades both report.

Head to head by decade

Decade	Brunei	Democratic Republic of Congo	Difference	Ahead
1970s	5 years	2 years	3 years	Brunei
1980s	5 years	2 years	3 years	Brunei
1990s	4.6 years	2 years	2.6 years	Brunei
2000s	3 years	2 years	1 years	Brunei
2010s	2 years	2 years	0 years	—
2020s	2 years	2 years	0 years	—

Averages of every year both report within each decade.

Frequently asked questions

Which has higher theoretical duration of lower secondary education, Brunei or Democratic Republic of Congo?: Brunei, at 2 years against 2 years in Democratic Republic of Congo as of 2020.
What is the difference in theoretical duration of lower secondary education between Brunei and Democratic Republic of Congo?: 0 years, with Brunei ahead.
How many years of comparable data are there for Brunei and Democratic Republic of Congo?: 51 years are reported by both, from 1970 to 2020.
How do Brunei and Democratic Republic of Congo rank globally for theoretical duration of lower secondary education?: Brunei ranks 188th and Democratic Republic of Congo ranks 188th 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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Brunei vs Democratic Republic of Congo: Theoretical duration of lower secondary education. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 02 September 2026, from https://education.statizoid.com/compare/theoretical-duration-of-lower-secondary-education-years/brunei-darussalam/congo-dem-rep/

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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.