Well if it isn't a bright line it seems, at least to me, a pretty well lit line.
(b) But three features of off-campus speech often, even if not always, distinguish schools’ efforts to regulate off-campus speech. First, a school will rarely stand in loco parentis when a student speaks off cam- pus. Second, from the student speaker’s perspective, regulations of off- campus speech, when coupled with regulations of on-campus speech, include all the speech a student utters during the full 24-hour day. That means courts must be more skeptical of a school’s efforts to regu- late off-campus speech, for doing so may mean the student cannot en- gage in that kind of speech at all. Third, the school itself has an inter- est in protecting a student’s unpopular expression, especially when the expression takes place off campus, because America’s public schools are the nurseries of democracy. Taken together, these three features of much off-campus speech mean that the leeway the First Amendment grants to schools in light of their special characteristics is diminished. Pp. 6–8.