How many years of comparable data are there for Congo and Iran, Islamic Republic of?

12 years are reported by both, from 2014 to 2025.

Where does this data come from?

UNESCO Institute for Statistics, published as Administration of a nationally-representative learning assessment at the end of lower secondary education in mathematics (number). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Congo vs Iran, Islamic Republic of: Administration of a nationally-representative learning assessment at

Congo

in 2025

Iran, Islamic Republic of

in 2025

Congo rank

1st

Iran, Islamic Republic of rank

1st

Administration of a nationally-representative learning assessment at over time

Congo
Iran, Islamic Republic of

How they compare

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

Across all 12 years both countries report, Iran, Islamic Republic of has been ahead every year.

Congo ranks 1st and Iran, Islamic Republic of ranks 1st of 228 countries.

Iran, Islamic Republic of has averaged higher in every one of the 2 decades both report.

Head to head by decade

Decade	Congo	Iran, Islamic Republic of	Difference	Ahead
2010s	0	1	1	Iran, Islamic Republic of
2020s	0.3333	1	0.6667	Iran, Islamic Republic of

Averages of every year both report within each decade.

Frequently asked questions

Which has higher administration of a nationally-representative learning assessment at, Congo or Iran, Islamic Republic of?: Congo, at 1 against 1 in Iran, Islamic Republic of as of 2025.
What is the difference in administration of a nationally-representative learning assessment at between Congo and Iran, Islamic Republic of?: 0, with Congo ahead.
How many years of comparable data are there for Congo and Iran, Islamic Republic of?: 12 years are reported by both, from 2014 to 2025.
How do Congo and Iran, Islamic Republic of rank globally for administration of a nationally-representative learning assessment at?: Congo ranks 1st and Iran, Islamic Republic of ranks 1st of 228 countries.
Where does this data come from?: UNESCO Institute for Statistics, published as Administration of a nationally-representative learning assessment at the end of lower secondary education in mathematics (number). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Individual pages

Share, cite or embed this page

Cite this page

Congo vs Iran, Islamic Republic of: Administration of a nationally-representative learning assessment at. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 03 September 2026, from https://education.statizoid.com/compare/administration-of-a-nationally-representative-learning-assessment-at-the-end-of-lower-3/congo-rep/iran-islamic-rep/

Embed or link this data

Paste this into a page to link back to these figures. The data itself is free to reuse under CC BY-SA 3.0 IGO (UNESCO Institute for Statistics); please keep the attribution.

<a href="https://education.statizoid.com/compare/administration-of-a-nationally-representative-learning-assessment-at-the-end-of-lower-3/congo-rep/iran-islamic-rep/">Congo vs Iran, Islamic Republic of: Administration of a nationally-representative learning assessment at</a> — Statizoid

About this data

Indicator: Administration of a nationally-representative learning assessment at the end of lower secondary education in mathematics (number)
Source: UNESCO Institute for Statistics
Licence: CC BY-SA 3.0 IGO (UNESCO Institute for Statistics)
Coverage: 235 places, 2,820 data points, 2014–2025
Last refreshed: 16 August 2026

February 2026 Data Release