international PISA test (2009). We extend the analyses in two ways and find that students must differ considerably in the time …

Do increased instruction hours improve the performance of all students? Using PISA scores of students in ninth grade …) overalmost five years. In the additional time, students are taught new learning content. On average, the reform improves student …-performing students do not benefit, high-performing students benefit the most. The findings suggest that increases in instruction hours …

of 0.03 standard deviations in students' test scores across all countries. Importantly, these effects of instruction time … are significantly larger for students with better qualified teachers, resulting in an increase in test scores of 0.04 to 0 …

-girl schools. These findings are based on a sample from the 2015 PISA which includes more than 35 thousand students from …Schools are ripe for policy intervention. We demonstrate that implementing different teaching practices is effective …, finding a greater prevalence of group discussion used in schools positively affects students’ life satisfaction and …

years. The intervention includes students aged 7-9 and consists of pulling students from their regular mathematics classes … school year. All students, not only struggling students, are pulled out. We find that students in treatment schools increased … for policy-makers seeking to use additional teaching resources to target a heterogeneous student population efficiently. …

full population of students, we find that the reform increases grade repetition rates and lowers final grade point averages …

remaining school years to provide students with a very similar core curriculum and the same overall instruction time. Using … aggregated administrative data on the full population of students, we find that the reform increases grade repetition rates and …

international PISA test (2009). We extend the analyses in two ways and find that students must differ considerably in the time …