Students from China, Singapore and Japan scored the highest in math, science and reading among those in 65 countries, including all the OECD member countries, according to 2012 data released by the Program for International Student Assessment.
Students from the United States scored below the OECD average in all three subjects. U.S. teenagers slipped in rankings, too, falling from 25th to 31st in math since 2009, from 20th to 24th in science, and from 11th to 21st in reading, according to the National Center for Education Statistics.
Here’s an interactive map of the 65 countries from which students were assessed by PISA. Click on any country to see how its students scored in different subjects, and how their performance has changed: