Check out the new features of the release 4.0.
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This is version 3.1 of this project.
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Large-scale-assessment (standardized competence test and questionnaires)
international standardized competence test and questionnaires
PISA population: 15-years old students in Switzerland
two-stage stratified sample design
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PISA population, restricted to the canton of Ticino: 15-years old students and their schools
