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    Marc Colomer

    Head of Research at Innovamat

    Head of Research at Innovamat, where he leads projects evaluating the impact of its programmes, supporting students with learning difficulties and examining the factors that shape mathematics learning. He holds a PhD in Cognitive Science from the Center for Brain and Cognition at Universitat Pompeu Fabra and was a postdoctoral researcher at the University of Chicago, working on infant cognitive development.

    workingpaper Education
    Explaining the learning decline in PISA 2025 by socioeconomic quartiles through methodological changes
    Lucía Cobreros Vicente, Marc Colomer, Eudald Correig-Fraga, Lucas Gortazar, Isaac Sayol
    23 Sep, 2026

    Working paper in collaboration with Innovamat Research Lab PISA 2025 Volume I (OECD 2026a) reports that the socioeconomic gap narrowed between 2022 and 2025 because advantaged students declined most — “a new phenomenon of affluent students who struggle academically”. However, this pattern is explained by the changes in how the index of economic, social and […]

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