The short answer is "no." College and university enrollment rates rose pretty consistently throughout the 1960s. For young women, this was part of a long, steady increase in college enrollments as more and more young women delayed marriage and sought advanced degrees/careers. For men, it's also part of a longer trend towards increasing enrollments - but you can also see a pronounced "spike" in the graph for men during the mid-1960s. The most likely explanation for this is that men who were enrolled in college were eligible for draft deferments - so going to college or university was the easiest way for most young men to avoid being called up for service in Vietnam. Another possible factor is that men who had already served were eligible for GI Bill benefits during this period. Many of them may have helped to drive up enrollments by attending school after they had served.