@roycroftmom My example was more about whether or not individuals in certain professions are inherently trustworthy. Medical professionals no longer get my blind trust. Neither do I believe teachers deserve blind trust.
Sometimes students cheat. Sometimes teachers mistakenly believe a student cheated. Were it my kid, I wouldn’t assume guilt or innocence. I would want to be present in conversations about the incident, and I’d want to see the evidence.
If my kid were to come home and say he was in a 3 vs 1 meeting like the one OP described, I would be very disturbed. Regardless of whether or not the student cheated, IMO, the meeting was inappropriate.