Since 1995, Association of Schools and Programs of Public Health (ASPPH) Fellowship Programs have contributed to efforts to build an effective public health workforce by placing public health graduate students in federal agency offices in the US and around the world. Under the guidance of mentors, participants experience first-hand how to apply public health theory and knowledge in practical settings. ASPPH fellows train in areas such as monitoring and surveillance, program management, research, evaluation, informatics, statistics, epidemiology, environmental health, and policy while making meaningful contributions to important public health programs.