I don't give a dern if boys that age do have sexual fantasies, that woman had no business screwing him. She should be charged with child abuse and sexual assault, and I would file a civil law suit against her.
Now, if the story is a lie, one can still apply the logic to mary kay laterno.
Of course, and the matter is exacerbated because she was his teacher. But that does not negate the comments made on this thread about the boy. Facts are facts.
As to the civil suit bit, what would be the damages? Just asking.