Although single-sex education was once the norm in the U.S., the practice has largely been confined to private schools for more than a century. However, with the introduction of the final version of the U.S. Department of Education's so-called single-sex regulations in 2006, public schools were allowed greater flexibility to offer single-sex…

It has been argued that "leadership" is seen as being centrally synonymous with school effectiveness and yet there is comparatively little evidence of the effects of leadership on school outcomes. More specifically, studies of principalship in Hong Kong have tended to be conducted in the quantitative tradition. The study described in…