Speaking of which, I was thinking of making a mortal NPC for public use: a teacher/truant officer to try and (unsuccessfully) corral these delinquent students.

No, he wouldn't have any spiritual awareness, he's just be another thorn for student characters to deal with.

I think it'd make more sense for at least all the student characters at least to attend the same school.

I could do that opening post if that would expedite things.