How many years of comparable data are there for Netherlands and Portugal?

6 years are reported by both, from 2003 to 2018.

Where does this data come from?

OECD Programme for International Student Assessment (PISA), published as PISA: Mean performance on the reading scale. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Netherlands vs Portugal: PISA: Mean performance on the reading scale

Netherlands

484.78

in 2018

Portugal

491.8

in 2018

Netherlands rank

25th

Portugal rank

23rd

PISA: Mean performance on the reading scale over time

Netherlands
Portugal

How they compare

Portugal currently reports 491.8 against 484.78 in Netherlands, a difference of 7.02.

The two have swapped places 1 time across 6 shared years of data; in 2003 it was Netherlands ahead.

Netherlands ranks 25th and Portugal ranks 23rd of 56 countries.

Netherlands has averaged higher in every one of the 2 decades both report.

Head to head by decade

Decade	Netherlands	Portugal	Difference	Ahead
2000s	509.42	479.74	29.69	Netherlands
2010s	499.66	492.56	7.09	Netherlands

Averages of every year both report within each decade.

Frequently asked questions

Which has higher pisa: mean performance on the reading scale, Netherlands or Portugal?: Portugal, at 491.8 against 484.78 in Netherlands as of 2018.
What is the difference in pisa: mean performance on the reading scale between Netherlands and Portugal?: 7.02, with Portugal ahead.
How many years of comparable data are there for Netherlands and Portugal?: 6 years are reported by both, from 2003 to 2018.
How do Netherlands and Portugal rank globally for pisa: mean performance on the reading scale?: Netherlands ranks 25th and Portugal ranks 23rd of 56 countries.
Where does this data come from?: OECD Programme for International Student Assessment (PISA), published as PISA: Mean performance on the reading scale. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Individual pages

About this data

Indicator: PISA: Mean performance on the reading scale
Source: OECD Programme for International Student Assessment (PISA)
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 56 places, 354 data points, 2000–2018
Last refreshed: 07 August 2026

Average score of 15-year-old students on the PISA reading scale. The metric for the overall reading scale is based on a mean for participating OECD countries set at 500, with a standard deviation of 100. Data reflects country performance in the stated year according to PISA reports, but may not be comparable across years or countries. Consult the PISA website for more detailed information: http://www.oecd.org/pisa/