It’s elementary: students benefit from pre-primary education. The OECD’s PISA 2009 results show that in practically all … OECD countries 15-year-old students who had attended some pre-primary school outperformed students who had not. In fact …, the difference between students who had attended for more than one year and those who had not attended at all averaged 54 …

-selective and comprehensive school systems that seek to provide all students with similar opportunities, leaving it to individual … schools and teachers to meet the particular needs of every student. Other countries group students, whether in different … schools or in different classes within schools, with the aim of serving students according to their particular academic …