"Pedophile" might be too strong, depending on the age range involved (not that it's out of the question either), but if they were under the age of consent it would be rape. Possibly, depending on the jurisdiction, students might be of consenting age, but the relationship would still violate either his contract or some educator-specific law, which could still lead to the storied sealed settlement. However, my gut sense from the drift of the Sockpuppet posting, and PJ's numerous allusions to the matter, is that the age of consent part was indeed an issue.