Organization for Economic Co-operation and Development OECD has launched an interactive map for Programme for International Student Assessment PISA 2015 results. The map presents the results by country, region and assessed subjects. It also allows results comparision between countries and regions.
The map is available here: http://www.oecd.org/pisa/
Approximately 540 000 students completed the PISA assessment in 2015, representing about 29 million 15-year-olds in the schools of the 72 participating countries and economies.