This research examines grantees' work to improve mathematics teacher quality in a nationally-funded program. The analysis employs qualitative methods using secondary source documents provided by 48 National Science Foundation Math and Science Partnership (NSF-MSP) grantees. Findings show that representations reported for mathematics teacher quality by the grantees mirror those used in previous research. Conditions used to influence mathematics teacher quality included research-based professional development, various roles for teacher leaders, and emerging collaboration between STEM and education faculty for the improvement of mathematics content knowledge for teachers at all levels. ..PAT.-Unpublished Manuscript [ABSTRACT FROM AUTHOR]