School counseling in Turkey and the United States has progressed on different historical paths. The two countries also have distinct cultures. This article reviews the historical development of the profession in both countries and specifically examines efforts to develop and implement broad national models based on a comprehensive developmental school counseling (CDSC) program. Challenges impeding further advancement of the profession in both countries are examined. Comparison of cross-cultural challenges will inform and support practitioners in both countries striving to implement national models based on CDSC programs.