On-going research stresses that the single most important factor in the classroom is the quality of the teacher. Teachers being the most important variable, have a major impact on a student’s success or their failure. Delia Stafford and Janie Feinberg have spent the majority of their professional lives ensuring that students get the best teachers.Ms. Stafford, president of the Haberman Educational Foundation, teaches research-based strategies to assist school districts identify teachers and principals of excellence. Ms. Feinberg, president of JP Associates,provides ongoing staff support in classrooms to assist teachers via her exemplary coaching strategies.In this interview, they respond to a number of questions about teacher quality, teacher evaluation and alternative certification.