Iran, Islamic Republic of vs Nigeria: Theoretical duration of pre-primary education

Iran, Islamic Republic of
1 years
in 2019
Nigeria
1 years
in 2019
Iran, Islamic Republic of rank
201st
Nigeria rank
201st

Theoretical duration of pre-primary education over time

  • Iran, Islamic Republic of
  • Nigeria
11.522.53197019942019

How they compare

Iran, Islamic Republic of currently reports 1 years against 1 years in Nigeria, a difference of 0 years.

Across all 50 years both countries report, Nigeria has been ahead every year.

Iran, Islamic Republic of ranks 201st and Nigeria ranks 201st of 210 countries.

Nigeria has averaged higher in every one of the 5 decades both report.

Head to head by decade

Decade Iran, Islamic Republic of Nigeria Difference Ahead
1970s 1 years 3 years 2 years Nigeria
1980s 1 years 3 years 2 years Nigeria
1990s 1 years 2.8 years 1.8 years Nigeria
2000s 1 years 1 years 0 years
2010s 1 years 1 years 0 years

Averages of every year both report within each decade.

Frequently asked questions

Which has higher theoretical duration of pre-primary education, Iran, Islamic Republic of or Nigeria?
Iran, Islamic Republic of, at 1 years against 1 years in Nigeria as of 2019.
What is the difference in theoretical duration of pre-primary education between Iran, Islamic Republic of and Nigeria?
0 years, with Iran, Islamic Republic of ahead.
How many years of comparable data are there for Iran, Islamic Republic of and Nigeria?
50 years are reported by both, from 1970 to 2019.
How do Iran, Islamic Republic of and Nigeria rank globally for theoretical duration of pre-primary education?
Iran, Islamic Republic of ranks 201st and Nigeria ranks 201st of 210 countries.
Where does this data come from?
UNESCO Institute for Statistics, published as Theoretical duration of pre-primary education (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Iran, Islamic Republic of vs Nigeria: Theoretical duration of pre-primary education. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 18 August 2026, from https://reference.statizoid.com/compare/theoretical-duration-of-pre-primary-education-years/iran-islamic-rep/nigeria/

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About this data

Indicator
Theoretical duration of pre-primary education (years)
Unit
years
Source
UNESCO Institute for Statistics
Licence
CC BY 4.0 (World Bank Open Data)
Coverage
210 places, 10,271 data points, 1970–2020
Last refreshed

Number of grades (years) in pre-primary education.