If you want to get more specific, the boys' room we're talking about here probably would have been somewhere in the upper Midwest, out in the suburbs. And the boys smoking in the stalls at the moment (after "checkin' out the halls, makin' sure the coast is clear," as Brownsville Station put it) would've been the kind who regularly watched Don Kirshner's Rock Concert and Midnight Special (which had both started airing in 1973), and read Creem magazine.
And come to think of it, it could just as well be a girls' room -- people were known to smoke in those too, y'know. Or a designated smoking area (are those even allowed anymore?), outside near the industrial arts end of the school. So we're probably talking burnouts, sure, but the truth is, the jocks and geeks and cheerleaders might've listened to much of the same music -- and smoked much of the same vegetation, for that matter. Hey, it was the '70s, dude! So the teenage laments in question are hard rock, mostly: sometimes leaning toward prog and glam, but mostly stuff that's got boogie to it. Don't get caught!