Which has higher duration of pre-primary education, Sierra Leone or Slovenia?

Sierra Leone, at 3 years against 3 years in Slovenia as of 2025.

What is the difference in duration of pre-primary education between Sierra Leone and Slovenia?

0 years, with Sierra Leone ahead.

How many years of comparable data are there for Sierra Leone and Slovenia?

56 years are reported by both, from 1970 to 2025.

Where does this data come from?

UNESCO Institute for Statistics (2026) – with minor processing by Our World in Data, published as Duration of pre-primary education. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Sierra Leone vs Slovenia: Duration of pre-primary education

Sierra Leone

3 years

in 2025

Slovenia

3 years

in 2025

Sierra Leone rank

27th

Slovenia rank

27th

Duration of pre-primary education over time

Sierra Leone
Slovenia

How they compare

Sierra Leone currently reports 3 years against 3 years in Slovenia, a difference of 0 years.

Across all 56 years both countries report, Slovenia has been ahead every year.

Sierra Leone ranks 27th and Slovenia ranks 27th of 223 countries.

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

Head to head by decade

Decade	Sierra Leone	Slovenia	Difference	Ahead
1970s	2 years	4 years	2 years	Slovenia
1980s	2 years	4 years	2 years	Slovenia
1990s	2.2 years	3.9 years	1.7 years	Slovenia
2000s	3 years	3.4 years	0.4 years	Slovenia
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 duration of pre-primary education, Sierra Leone or Slovenia?: Sierra Leone, at 3 years against 3 years in Slovenia as of 2025.
What is the difference in duration of pre-primary education between Sierra Leone and Slovenia?: 0 years, with Sierra Leone ahead.
How many years of comparable data are there for Sierra Leone and Slovenia?: 56 years are reported by both, from 1970 to 2025.
How do Sierra Leone and Slovenia rank globally for duration of pre-primary education?: Sierra Leone ranks 27th and Slovenia ranks 27th of 223 countries.
Where does this data come from?: UNESCO Institute for Statistics (2026) – with minor processing by Our World in Data, published as Duration of pre-primary education. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Sierra Leone vs Slovenia: Duration of pre-primary education. Statizoid, drawing on UNESCO Institute for Statistics (2026) – with minor processing by Our World in Data. Retrieved 28 August 2026, from https://education.statizoid.com/compare/duration-of-pre-primary-education/sierra-leone/slovenia/

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<a href="https://education.statizoid.com/compare/duration-of-pre-primary-education/sierra-leone/slovenia/">Sierra Leone vs Slovenia: Duration of pre-primary education</a> — Statizoid

About this data

Indicator: Duration of pre-primary education
Unit: years
Source: UNESCO Institute for Statistics (2026) – with minor processing by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 223 places, 12,020 data points, 1970–2025
Last refreshed: 28 August 2026

Average number of years that a child is expected to spend in pre-primary education, defined by country's official educational regulations or laws.