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 …

is possible, and provides students, parents, policy makers and other education stakeholders insights into what enables …Many socio-economically disadvantaged students excel in PISA. Students who succeed at school despite a disadvantaged … background -- resilient students -- are the focus of Against the Odds. The report shows that overcoming barriers to achievement …

definitions of middle-class using data from the 2007 World Gallup Poll. Seven objective income-based definitions of social class … fact that self-perceived social status is associated not just with income, but also with personal capabilities …

. Seven objective income-based definitions of social class are contrasted with a self-perceived social status measure … incomes. Mismatches arise because self-perceived social status is associated not just with income, but also with personal …

with the likelihood of being middle class. The example of Colombia illustrates that, while growing in size, this income …