I realize that.

> The point of the study was to examine the relational map within the high school. It was not to examine sexual hygiene of students in the school.

No disagreement there.

>> "It would be of far more educational value to the group that was studied and all their peers." > How is that so?

Because it would show them in a fairly easy to understand graph how STDs spread through such a network.

Having the 'outside world' connected wouldn't hurt either.