"However, he had the sense never to try and charm me as he charmed so many of my colleagues." (17.115)
Dumbledore relates the story of young Tom Riddle at Hogwarts. Are we talking about a magical kind of charm here, or a natural kind of charm? Did Tom Riddle use magic to excel at Hogwarts, or was he really an upstanding citizen and a kind man? If he was anything like what he was at the orphanage all of those years ago, we would think teachers at Hogwarts would be kind of wary of him. One major thing does change between the orphanage and his time at Hogwarts – instead of fearing constantly that there's something wrong with him, Tom knows he is special. His ability to muster up a group of followers while in school tells us that he is not such a loner after all, but rather a skilled manipulator.