Diabetes is a common chronic illness among school-age children. The school nurse collaborates with the student, parents, and teachers to help the child manage their diabetes effectively. Very little is known about the relationship between school nurse interventions and parent/teacher perceptions of the child's self-management. We examined this relationship in a sample of 69 school-age children who received case management from school nurses. Our findings suggest that teachers and parents do not always agree on how well a child manages their illness. When school nurses provide more education and counseling, parents are more likely to perceive an improvement in their child's self-management. Teachers are more likely to perceive an improvement when the nurse provides more classroom visits and includes the physical education teacher and guidance counselor. These findings suggest that the roles of educator, counselor, and collaborator are important for school nurses who provide care to school-age children with diabetes. (Contains 3 tables.)