"Yet 99.9% were advanced to next grade by their school system."

Just wondering Dave; if you were supervising 20+ people, making a wage that barely sustained you, and were the subject of frequent, undeserved public derision, and you had a major pain in the butt in the shape of a disinterested, disruptive and poorly parented 12-year old that your were obligated to tolerate everyday, and your choice was either a) withhold this thorn for another go round, or b) send him down the road, what might be your resolve? I trust this doesn't account for your diploma.