What is the difference in lower secondary school starting age between Sao Tome and Principe and Slovenia?

0 years, with Sao Tome and Principe ahead.

How many years of comparable data are there for Sao Tome and Principe and Slovenia?

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

Where does this data come from?

Data API, UN Educational, Scientific and Cultural Organization (UNESCO), published as Lower secondary school starting age (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Sao Tome and Principe vs Slovenia: Lower secondary school starting age

Sao Tome and Principe

12 years

in 2025

Slovenia

12 years

in 2025

Sao Tome and Principe rank

30th

Slovenia rank

30th

Lower secondary school starting age over time

Sao Tome and Principe
Slovenia

How they compare

Sao Tome and Principe currently reports 12 years against 12 years in Slovenia, a difference of 0 years.

The two have swapped places 2 times across 56 shared years of data; in 1970 it was Slovenia ahead.

Sao Tome and Principe ranks 30th and Slovenia ranks 30th of 209 countries.

Sao Tome and Principe has averaged higher in every one of the 6 decades both report.

Head to head by decade

Decade	Sao Tome and Principe	Slovenia	Difference	Ahead
1970s	11 years	11 years	0 years	—
1980s	11 years	11 years	0 years	—
1990s	11.2 years	11 years	0.2 years	Sao Tome and Principe
2000s	12.6 years	11.3 years	1.3 years	Sao Tome and Principe
2010s	12 years	12 years	0 years	—
2020s	12 years	12 years	0 years	—

Averages of every year both report within each decade.

Frequently asked questions

Which has higher lower secondary school starting age, Sao Tome and Principe or Slovenia?: Sao Tome and Principe, at 12 years against 12 years in Slovenia as of 2025.
What is the difference in lower secondary school starting age between Sao Tome and Principe and Slovenia?: 0 years, with Sao Tome and Principe ahead.
How many years of comparable data are there for Sao Tome and Principe and Slovenia?: 56 years are reported by both, from 1970 to 2025.
How do Sao Tome and Principe and Slovenia rank globally for lower secondary school starting age?: Sao Tome and Principe ranks 30th and Slovenia ranks 30th of 209 countries.
Where does this data come from?: Data API, UN Educational, Scientific and Cultural Organization (UNESCO), published as Lower secondary school starting age (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Sao Tome and Principe vs Slovenia: Lower secondary school starting age. Statizoid, drawing on Data API, UN Educational, Scientific and Cultural Organization (UNESCO). Retrieved 03 September 2026, from https://education.statizoid.com/compare/lower-secondary-school-starting-age-years/sao-tome-and-principe/slovenia/

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About this data

Indicator: Lower secondary school starting age (years)
Unit: years
Source: Data API, UN Educational, Scientific and Cultural Organization (UNESCO)
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 209 places, 11,411 data points, 1970–2025
Last refreshed: 03 September 2026

Lower secondary school starting age is the age at which students would enter lower secondary education, assuming they had started at the official entrance age for the lowest level of education, had studied full-time throughout and had progressed through the system without repeating or skipping a grade.