If you used that then state that you used it before you just bring it up later on. And a teacher having access to a room in the school isn't that ridiculous, The Third probably just looks the other way considering how much of an asset James is in picking out the weak. It's basically like if I say i got knocked down and then two posts later I say "AAH BUT WHAT A TRICK ANCIENT SCOTTISH VOODOO UPON YE IT WAS ALL A RUSE AS I WAS HERE, BEHIND THEE THE WHOLE TIME, THE FELLOW YOU SEE BEFALLEN WAS ACTUALLY THOUSELF NYEHAH!"