Grouping students into separate classes according to their 'ability' is an inequitable practice that does not, overall, improve academic outcomes. Research has continued to show that class ability grouping widens the educational gap between students from disadvantaged and privileged backgrounds. PISA data analysis suggests that class ability…

This work summarizes the results of two randomized control trails (RCTs) aimed at evaluating the effectiveness of a professional development program for lower secondary school math teachers. The program, called M@t.abel, was financed by the Ministry of Education in Southern Italy with EU funds. It lasts a full school year and it is based on formal…

This technical report and user's guide is designed to provide researchers with an overview of the design and implementation of the 2009 Program for International Student Assessment (PISA), as well as with information on how to access the PISA 2009 data. This information is meant to supplement that presented in Organization for Economic Cooperation…

Findings from the recent OECD PISA studies highlight the need for the Hungarian school system to improve both effectiveness and equality. Hungarian 15-year-old students scored somewhat below or around the OECD average in the areas of reading, mathematical, and scientific literacy. In addition, students differ less in academic achievement within…