A report from the National Academies of Sciences, Engineering and Medicine finds that additional teacher preparation and training, and a more diverse teacher workforce would help educators meet increased demands and expectations from parents, students, employers and policymakers. Over the last 20 years the profession of teaching has changed. Teachers now must know more about the content they teach, create supportive environments for students from more diverse backgrounds and learning needs, teach to new curriculum and spend more time communicating with families while working with fewer resources.