He simply dropped out of Willoughby life, lamented by none, and missed only by a few who had suffered under his influence and were now far better without him.
After morning classes the doctor summoned the school to the great hall, and there briefly announced the changes that had taken place.
"Two boys," said he, "are absent to-day--absent because they have left Willoughby for good.

Now that they are gone, I need not dwell on the harm they have done, except to warn any boys present, who may be tempted to follow in their steps, of the disgrace and shame which always follow vice and dishonesty." There was a great stir and looking round as the doctor reached this point.

He had not yet announced the names, though most present were able to guess them.
"It's not you two, then ?" whispered Telson across the bench to where Cusack and Pilbury sat in mutual perplexity.
"Two things at least are comforting in what has passed," continued the doctor.

"One is that by the confession of these two boys a very unpleasant mystery, which affected the honour of the whole school, has been cleared up; I mean, of course, the accident at the boat-race early in the term." It was then, that! Willoughby bristled up with startled eagerness to hear the rest, and even Telson found no joke ready to hand.
"The other consolation is that one of the boys, Gilks--" There was a sudden half-suppressed exclamation as the name was announced, which disconcerted the doctor for a moment.
"Gilks," pursued he, "expressed deep contrition for what he had done, and wished, when leaving, that the school should know of his shame and sorrow.

He left here a softened and, I hope, a changed boy; and I feel sure this appeal to the generosity of his old schoolfellows will secure for him what he most desires--your forgiveness." There was a silence, and every face was grave, as the doctor concluded, "I wish I could say as much of his companion, and I fear, leader in wrong--Silk." There was another start, but less of surprise than assent this time.
For when Gilks had been named as one culprit every one knew the name of the other.
"I have no message for you from him," said the doctor, with a voice in which a faint tremble was discernible; "but on his behalf we may at least hope that in new scenes, and under more favourable conditions, he may be able to recover the character he lost here.