I got it!!!
You graduated from thief school! Congrats by the way. But to explain everything let me first tell you how you must graduate from Rogue School. You are given nothing more then a mask, and a ratty outfit, goggles, and some gloves and told you must steal something from the Head Master Thief's Office.
Now one would think stealing something like a pen or pencil would count however you are graduating from Night Master School of Exceptional Rogues. So nothing but exceptional work will do the bigger the item the better reputation you will start out with.
Just to get to his office you had to cross the mote now swimming above water would give you away so you fashioned your own snorkel and went under water. Then you had to make it through all the traps laid out just to reach the office.
You being an exceptional thief didn't steal the desk, the chair, the massive trunk of jewels, or the test answers to sell to next years suckers. No, you went for his most prized possession his trophy of mastering water spells.
Not only did you graduate but now even the Head Master Rogue fears your prows in thieving. Way to go!!