Introduction / Jane Zuengler and KimMarie Cole -- The cultural and political context of schooling at Jefferson High School / Francis K. Vavrus -- The functions of lexical items in the asthma project discourse / Hugh Bishop -- Conversations on the research process : scope of data / Jane Zuengler -- The contextualization of participation in the asthma project : response sequences in classroom talk / John Hellerman -- Conversations on the research process : defining discourse / Jane Zuengler -- Narratives of relevance : seizing (or not) critical moments / Mary Elizabeth Curran