This study surveyed equal groups of American, French Canadian, and English-Canadian high school students to learn what sources they used in formulating views on national and international issues. A total of 600 eleventh grade history students was surveyed. Results showed that mass media was the primary source used by all groups: in particular television newscasts, newspapers, and documentary films were influential. Both Canadian groups used these media more than Americans did. The second most important source was the school, although this was a minor source for both Canadian groups. In all groups, the teacher has the dominant individual role, while textbooks are next in importance. Films and educational television have only a minor role in school information. Third in importance was influence of the peer group, and least important was religion. This study negates earlier studies by showing that the home has changed from an information-poor environment to an information-rich one, due to television. The schools are falling behind in their role as an agent of socialization. Schools should utilize the mass media far more than they do presently. (JK)