<p>In those instances when my son was asked to a friend’s house for a weekend etc, I usually verified that the parents had indeed extended an invitation, but that was about it. Mostly, I relied on my son to use good judgment and made it clear to him what he’d be risking if he used bad judgment. While I was always worried until he was back on campus safely, I never had a single problem over four years. I’ll bet your son will be responsible too.</p>