airplay prank, need to find culprit

I am a desktop support technician at a highschool, and a few of our staff have macbooks instead of windows computers. Specifically one of them has a macbook pro with retina, and os x mavericks. Today a few images poped up in full screen on his macbook, and it looks to me like someone did airplay from their device to his.

My question is, is there a log of this kind of activity that might give the ip address, mac address, or device name or any such information, and if so, where would could i find that log file?