“Everybody knows that schools differ massively in their quality. This is not just – or even especially – an Irish phenomenon. However finding the elusive factors that determine what make schools good has proved both scientifically challenging and politically tricky. There is now a fairly substantial body of evidence showing that reducing class size is not that important, certainly once it is below a certain level …” (more)
[Kevin Denny, Geary Behavioural Economics Blog, 14 February]