This is a case study undertaken in a large urban comprehensive school where the author was the SENco. The research set out to find out how mainstream subject teachers handled the expectation that they could all be special needs teachers within their own class rooms. But had the teachers really embraced that challenge and how did they go about making it a daily reality? The first part of the research investigated through a whole teaching staff questionnaire and followed on with a deeper investigation of the issues raised, by interviewing six participant teachers. Five of those teachers also agreed to partnership teach with the SENco through the 2012/13 academic year to help assess the development of their differentiation strategies.