Organization's mission the mission of the children's school services, INC., is to advance the health and well-being, academic success, and life-long achievement of students in the district of columbia. Children's school services provides nursing services in 117 DC public and 68 public charter schools. Form 990, part v: the filing organization has entered "0" in part v, line 1a because the organization's 1099 returns are filed by and under the name and EIN of children's hospital, INC., a related entity, under a shared services agreement.