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What are the Pisa tests?
The Programme for International Student Assessment (Pisa) tests are a worldwide study by the OECD. They check how 15-year-olds in different countries are doing in maths, reading, and science. The results help countries compare their education systems and learn from each other. Wales's lower scores in these tests highlight areas for improvement.
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Welsh 15-year-olds scored lower than other UK teenagers in 2023 Pisa testsRelated explainers
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