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

21 years are reported by both, from 1999 to 2019.

Where does this data come from?

UNESCO Institute for Statistics, published as Theoretical duration of early childhood education (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Hong Kong vs Sao Tome and Principe: Theoretical duration of early childhood education

Hong Kong

3 years

in 2019

Sao Tome and Principe

3 years

in 2019

Hong Kong rank

101st

Sao Tome and Principe rank

101st

Theoretical duration of early childhood education over time

Hong Kong
Sao Tome and Principe

How they compare

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

The two have swapped places 1 time across 21 shared years of data; in 1999 it was Hong Kong ahead.

Hong Kong ranks 101st and Sao Tome and Principe ranks 101st of 204 countries.

Across the 3 decades both report, Hong Kong averaged higher in 1 and Sao Tome and Principe in 2.

Head to head by decade

Decade	Hong Kong	Sao Tome and Principe	Difference	Ahead
1990s	5 years	4 years	1 years	Hong Kong
2000s	4.2 years	5 years	0.8 years	Sao Tome and Principe
2010s	3 years	3.2 years	0.2 years	Sao Tome and Principe

Averages of every year both report within each decade.

Frequently asked questions

Which has higher theoretical duration of early childhood education, Hong Kong or Sao Tome and Principe?: Hong Kong, at 3 years against 3 years in Sao Tome and Principe as of 2019.
What is the difference in theoretical duration of early childhood education between Hong Kong and Sao Tome and Principe?: 0 years, with Hong Kong ahead.
How many years of comparable data are there for Hong Kong and Sao Tome and Principe?: 21 years are reported by both, from 1999 to 2019.
How do Hong Kong and Sao Tome and Principe rank globally for theoretical duration of early childhood education?: Hong Kong ranks 101st and Sao Tome and Principe ranks 101st of 204 countries.
Where does this data come from?: UNESCO Institute for Statistics, published as Theoretical duration of early childhood education (years). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Hong Kong vs Sao Tome and Principe: Theoretical duration of early childhood education. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 17 September 2026, from https://education.statizoid.com/compare/theoretical-duration-of-early-childhood-education-years/hong-kong-sar-china/sao-tome-and-principe/

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<a href="https://education.statizoid.com/compare/theoretical-duration-of-early-childhood-education-years/hong-kong-sar-china/sao-tome-and-principe/">Hong Kong vs Sao Tome and Principe: Theoretical duration of early childhood education</a> — Statizoid

About this data

Indicator: Theoretical duration of early childhood education (years)
Unit: years
Source: UNESCO Institute for Statistics
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 204 places, 4,300 data points, 1970–2020
Last refreshed: 04 September 2026

Number of grades (years) in early childhood education.