Dan McGinn is an instructional specialist for Heather Hill’s instrument development group for NCTE at CEPR. This work includes creating a training program for the Mathematical Quality of Instruction (MQI) instrument; recruiting, certifying, hiring and overseeing MQI raters for NCTE and other projects; and analyzing data from these projects. Dan received a PhD in mathematics and an M.S. in mathematics education from the University of Wisconsin, where he worked extensively to revamp the mathematical content courses for pre-service teachers. He is interested in the mathematical preparation of teachers.