What counts as ‘evidence’ in literacy education?

Abstract A recent issue of the Australian Journal of Language and Literacy included an article reporting on a systematic narrative review of the research literature that indicated that there was insufficient evidence to conclude whether genre theory and systemic functional linguistics either ‘worked’ or ‘did not work’. The criteria used to evaluate these studies excluded any study that did not conform to the ‘gold standard’ associated with experimental research such as randomised controlled tria