The Council of Pediatric Subspecialties (CoPS) was founded in September 2006 largely due to concerns about the nonuniformity of the fellowship application process. Working with the pediatric subspecialty community, CoPS has been successful in promoting a uniform process with many more pediatric fellowship programs now using a matching program and the Electronic Residency Application Service. More important, the organization has created a bidirectional network of communication among the pediatric subspecialties and has used this to accomplish a great deal more than improving the entry of residents into subspecialty training. CoPS has provided a united voice for the subspecialties in response to the Institute of Medicine’s Duty Hours report, participated in the development of educational conferences geared toward the subspecialist, promoted careers in the subspecialties, and worked with other pediatric organizations to advocate for improved health care for children. This article highlights CoPS’ many achievements and describes the methods it used to accomplish them, illustrating how pediatric subspecialists can develop a communication network and use this to work together to achieve common goals.