There are certain critical periods in the development of the human organism. The years of schooling coincide with several of these critical periods. One of the psycho-educational implications of these critical periods is the degree to which students will believe their source of information and indeed to what source they will turn for information and help. This empirical study has examined by chi-square procedures, the relationship between educational level of students, and the degree to which they will endorse various sources of information concerning drug problems.