Over the past thirty years, numerous studies confirmed that new teachers do not have the requisite knowledge to understand the complex interrelationships among management, behavior, and academic tasks. An important missing piece in the literature is how the concerns of experienced teachers differ from those cited by beginning teachers. Based on previous research, this study compares beginning and experienced teachers' concerns with respect to managing classroom behavior, dealing with time constraints and work load, parent interactions, and academic preparation. This paper examines these complex relationships by comparing a national sample of beginning teachers to a national cross-section of experienced teachers to ascertain if beginning teachers' concerns diminish with experience. Significant differences were found on the Classroom Management and Parent Interaction scales while no differences were found on the Academic Preparation and Time Management scales. This study points to a number of issues important to teacher educators responsible for preparing candidates for initial certification as well as to school district personnel responsible for mentoring new teachers and strengthening professional development for in-service teachers. (Contains 5 tables.)