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An analysis of Portuguese students’ performance in the OECD Programme for International Student
This study focuses on the evolution of the scores of Portuguese students in PISA cycles from 2003 to 2009. It may be concluded that the variation in scores is strongly influenced by changes in the family background of students and other variables, such as the distribution of students by degrees. The sampling methods used for data collection under the programme tend to amplify these changes. When such factors are taken into account for the analysis, holding constant the score determinants, there has been a continued improvement in student performance over the cycles considered.