Much research in co-op has utilized a quantitative or experimental approach within a positivist paradigm. Here we present a critical analysis of interpretive/qualitative studies in terms of output, diversity, quality, along with an overview of the topics investigated. Our analysis suggests that interpretive work is a substantial part of co-op research output, and that is spans a wide range of programs, disciplines and geographical locations. Similar themes to those investigated by a quantitative approach are investigated by interpretive researchers, but there is emphasis in interpretive work on understanding more details of co-op issues in relation to the educational context.