This article describes an effort by principals and university researchers to create student co-research groups at several high schools. The authors describe the student co-research team concept, how it provides principals with ways to actively engage students in ongoing school-reform efforts, and how it assists them in gathering and analyzing data regarding school change. More specifically, the article describes an effort to create student co-research groups across school sites to address dilemmas districtwide and within specific schools. Co-research team enactment, training, and support are discussed and suggestions for principals to sustain such a concept are recommended.