Keystone Human Services International is the newest of the Keystone Human Services agencies. KHSI reflects our enduring commitment to improving the lives of children and families and our vision of working to build a better and safer world. KHSI's mission is to provide services, supports, and programs designed to improve the lives of children and families outside the United States. Keystone works to promotes self-determination, individual action, social responsibility, democratic values, leadership, and entrepreneurial skills. (Harrisburg, PA)