Patroclus could help but feel like someone was looking at him, he had an idea at who it was, and why it was happening, but all that did was make his heart swell.....cause you know, it meant that that person care enough to be jealous.....

Turning his mind back to the lesson, Patroclus nodded in a agreement with the other students answers

"I think what you are getting at is the possibility that the ghost Muggles refer to, are either careless wizards or witches that have allowed themselves to have their there actions seen by muggles whilst disillusioned, or on the flipside Wizards doing it deliberately"

Naughty people, flouting the Statutue like that!