just after leveling up a tutorial tip came up. It was the headmaster saying he wanted to see me.When I went to his house there was no exclamation over his head. When I pressed "X" to talk to him he didn't give me a quest.
Merle Summoning Players without Reason: Sometimes Merle likes to check in with his students, however we've noticed lately that he's been calling on our young Wizards every time they gain a new level. Don't worry, he may not always have a quest for you, however it's a good reminder to visit him, as well as your Professors, on a regular basis. (Note: you may also see similar messages from Simon in Ravenwood, who is ready to introduce you to housing.)