Latest Pisa test results based on unrepresentative samples of 15-year-old pupils, UCL research claims
England’s recent improvement in international tests comparing the educational performance of 15-year-olds across the globe is based on “flawed” data which, if corrected, could result in a sharp drop down the rankings, according to new research.
The government hailed the most recent round of results in the OECD’s Programme for International Student Assessment (Pisa) in 2018, which saw a marked improvement in England’s maths results, as a vindication for policy changes driven by Michael Gove when he was education secretary.