The professors action in isolation was unethical by virtue of purposefully misinforming a public resource. But the primary fault for outcome lies with the stude

The professors action in isolation was unethical by virtue of purposefully misinforming a public resource. But the primary fault for outcome lies with the students. But the pedagogy could be improved if trying to reduce instances of cheating. The trap wasn't just the professors intentful actions; doing a take home final was also cheaters bait. Perhaps even how the quizes, class, and assignments were ran were also cheaters bait and creating cheating habits. If the idea is to teach people to be ethical in practice through discipline and not just simply about ethics, it really shouldn't be a lesson only experienced at the point when repercussions for failing are extreme and extend beyond the effected situation. Though I'm not sure fixating heavily on cheating marks is the right way to frame the problem of trying to improve performance, understanding, and confidence in a subject... It feels like some portion of the cheating of the institution, is self inflected due to the orthodoxy of the institution itself.