Norway's students performed better in science, math and reading than they did three years ago, and are now above the OECD average in all three disciplines.
In the last Pisa rankings, released in 2013, Norwegian students were below average in both math and science, and only above average in reading.
In three years, Norwegian 15-year-olds increased by three points in science, five points in reading and one point in math.
A total of 24 countries are above the OECD average in all three disciplines.
Norway ranked 24th overall, ahead of countries like the US, Sweden, France, Russia and Spain.
Singapore, Japan, Estonia, Taiwan and Finland topped the rankings, which tests 15-year-olds in 72 countries and territories.
Norway is the third best Nordic country after Finland (5th) and Denmark (21st).
“On the right path”
“There are many indications that we are on the right path. We must thank the teachers and principals for the important work they do,” Education Minister Torbjørn Røe Isaksen said.
In mathematics, Norway is among the countries with the greatest progress since the previous Pisa ranking. In science, the results have been stable since 2009, but there was a slight improvement compared to 2006.
But where Norwegian students really distinguish themselves is when it comes to reading. Norwegian teens are among the best in the entire OECD.
More details on Norway's Pisa performance can be see here: