Why did American college enrollment rise early in the Vietnam War?

The only reason for college enrollments to rise during the
Vietnam War was the fact that men wanted to avoid the draft.  During the Vietnam War,
there was a draft through which all men had to make themselves available for military
service.  Many men did not want to get drafted and have to go fight in Vietnam.  One way
to avoid having to do this was by going to college.  There were, at that time, draft
deferments that enabled men to get out of being drafted if they went to college.  This
is why more men started going to college during this time.