This study explored beginning special education teacher quality and the role that knowledge and skill for teaching reading plays in defining quality. The authors examined the relationship between beginning teachers' knowledge for teaching reading and their classroom practices during reading instruction and, further, relationships between classroom practices and student achievement gains on various reading measures. Findings revealed special education beginning teachers were somewhat knowledgeable about teaching reading, but this knowledge did not contribute a significant portion of variance to classroom practice. Practices in classroom management, decoding practices, and providing explicit, engaging instruction accounted for a significant portion of variance in student reading gains. Implications for further research and the preparation and induction of beginning teachers are provided. (Contains 8 tables.)