My rule of thumb for sending invitations to adult children of relatives is that if they live in the same house, they will be included by name on the same invitation as their parents. If they live independently, they will receive their own invitation. I know many people think that every person over 18 should get their own invitation, but I'm just not sending four $8 invitations to one house.
My question is about college students. With a late June wedding date, invites will go out right at the end of the spring semester. For the college students, some may stay at school, some may come home to their parent's house, and some may do summer programs elsewhere, and not to mention it's very common to move into a new dorm/apt each year of college. I really don't want these invites to get lost or stuck in a college dorm mailbox all summer, just to be opened in August, 2 months after the wedding. Should I just include the college students on their parents' invites?