This study examines whether targeted mentoring can make a difference during the induction years. The effects of a mentoring intervention based on principles of instructional quality and effective professional development were studied. Learning to lead classroom discussions is a high-leverage practice related to effective teaching. Forty-two beginning elementary teachers participated in yearlong mentoring to lead discussions for higher-order thinking. These novices were compared to 41 beginning teachers in the same high-poverty school district who did not receive the mentoring treatment. Qualitative and quantitative findings illustrate significant differences in beginning teacher practices based on involvement in the intensive mentoring. (Contains 4 tables.)