This is a searchable database of measures of teachers' mathematics or science content knowledge. The measures of teacher content knowledge were identified and analyzed from empirical research, including research conducted by projects of NSFs Math and Science Partnership (MSP) program. This database is part of the MSP Knowledge Management and Dissemination Project (KMD) website, which highlights findings from research and insights from practice. KMD reviews provide guidance to practitioners in the areas of deepening teacher content knowledge, teacher leadership preparation and practice, the involvement of STEM disciplinary faculty in the work of deepening teacher/teacher leader content knowledge through the projects of the MSP program, and teacher induction.