in-service program in-service program an in-service program is a professional training or staff development effort, where professionals are trained and discuss their work with others in their peer group. it is a key component of continuing medical education for physicians, pharmacists, and other medical professionals. it is also common among public servants including educators and public safety officials. in-service program also refers to some programs offered to enlisted members of the military while they are in service. in-service programs also refers to educators, where they discuss methods and cases and work loads.