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Andrés Sandoval-Hernández The Programme for International Student Assessment (PISA) is a survey of the educational performance of 15-year-old students organised by the Organisation for Economic Co-operation and Development (OECD). The results of the latest round of PISA will be released...

Álvaro Choi Evaluating the effects of specific country / regional policies using large scale international assessments is a challenging task. This is primarily because this is not actually what they have been designed for. However, the rich data contained within...

Rolf Vegar Olsen & Sigrid Blömeke Most of the international large-scale assessments are repeated in regular intervals. PISA is conducted every three-years, TIMSS every fourth year, and PIRLS is conducted with five-year intervals. Accordingly, this allows for comparisons within countries...