We analyse response patterns to an important survey of schoolchildren, exploiting rich auxiliary information on respondents' and non-respondents' cognitive ability that is correlated both with response and the learning achievement that the survey aims to measure. The survey is the Programme for...

The concept of social exclusion has been widely debated in Europe but its application to children has seen relatively little discussion. What could be meant by exclusion of children is the first main theme of the paper. Among other things, I consider the choice of reference group, the...