Successful education systems are able to guarantee that all students succeed at high levels. Across OECD countries …, around 60% of the overall, country-level variation in student performance can be traced to differences in how well students …

In 2012, 15-year-old students spent over two hours on line each day, on average across OECD countries. The most common …% of students doing one of these every day or almost every day. Students who spent more than six hours per day on line … average across OECD countries, 7% of students spend this much time on line during a typical weekday. …

Immigrant students often have to overcome multiple barriers at once in order to succeed at school. Across most OECD … countries, poor performance among immigrant students relative to other students is strongly related to social disadvantage at … school, as reflected in the proportion of students whose mothers have low levels of education. The concentration, in a school …

Immigrant students who share a common country of origin, and therefore many cultural similarities, perform very … differently across school systems. The difference in performance between immigrant students and non-immigrant students of similar … socio-economic status is smaller in school systems with large immigrant populations and where immigrant students are as …

Only in some countries is a larger proportion of immigrant students in schools related to lower student performance … – and this relationship is mostly explained by the concentration of disadvantaged students in these schools. Immigrant … students from the same country of origin and similar socio-economic background often perform differently in different school …

science test, students had to display their mastery of three skills: explaining phenomena scientifically (based on knowledge …