How many years of comparable data are there for Iran and Trinidad and Tobago?

34 years are reported by both, from 1990 to 2023.

Iran vs Trinidad and Tobago: Average years of schooling vs. expected years of schooling

Iran

10.85 years

in 2023

Trinidad and Tobago

10.79 years

in 2023

Iran rank

73rd

Trinidad and Tobago rank

76th

Iran currently reports 10.85 years against 10.79 years in Trinidad and Tobago, a difference of 0.06 years.

The two have swapped places 1 time across 34 shared years of data; in 1990 it was Trinidad and Tobago ahead.

Iran ranks 73rd and Trinidad and Tobago ranks 76th of 192 countries.

Across the 4 decades both report, Iran averaged higher in 1 and Trinidad and Tobago in 3.

Decade	Iran	Trinidad and Tobago	Difference	Ahead
1990s	6.99 years	8.01 years	1.02 years	Trinidad and Tobago
2000s	9.25 years	9.69 years	0.4405 years	Trinidad and Tobago
2010s	10.17 years	10.67 years	0.5079 years	Trinidad and Tobago
2020s	10.82 years	10.78 years	0.0369 years	Iran

Averages of every year both report within each decade.

Which has higher average years of schooling vs. expected years of schooling, Iran or Trinidad and Tobago?: Iran, at 10.85 years against 10.79 years in Trinidad and Tobago as of 2023.
What is the difference in average years of schooling vs. expected years of schooling between Iran and Trinidad and Tobago?: 0.06 years, with Iran ahead.
How many years of comparable data are there for Iran and Trinidad and Tobago?: 34 years are reported by both, from 1990 to 2023.
How do Iran and Trinidad and Tobago rank globally for average years of schooling vs. expected years of schooling?: Iran ranks 73rd and Trinidad and Tobago ranks 76th of 192 countries.
Where does this data come from?: UNDP, Human Development Report (2025) – with minor processing by Our World in Data, published as Average years of schooling vs. expected years of schooling. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Indicator: Average years of schooling vs. expected years of schooling
Unit: years
Source: UNDP, Human Development Report (2025) – with minor processing by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 192 places, 6,079 data points, 1990–2023
Last refreshed: 07 August 2026

Average number of years (excluding years spent repeating individual grades) adults over 25 years participated in formal education.