He is a practitioner of magic, and attends a school for wizards, Lady Raphael. And he seemed eager for knowledge the few times I have spoken with him. I am afraid I know little more than that.

[Because she can't not answer the Archangel when the Lady has asked a question. To do so would be disrespectful.]

Oh! It is the same school which Harry attends, only Tom was a student there many years before Harry and his friends. Perhaps, then, they will know more of him.