When Alexander, with the shadow guards, Caelith included, returned to the academy, he dismissed the clone and retained its memories.
There, he saw the discussions that started amongst the students and even some teachers when he was introduced as the new guest teacher.
The headmaster, Francis Ostrich, also gave him a guest teacher badge so he could use it to access certain areas.
That badge didn't disappear when Alexander dismissed the Liquid Shadow clone, so he picked it up from the floor where it dropped.
Not really caring about it, Alexander just tucked it away into his sleeve and forgot about it.
If he ever wanted to get somewhere, he wouldn't need a badge to do it.
He could just sneak or break in there if needed.
After putting away the badge, Alexander decided to go look for Michelle.
He didn't know whether Michelle even noticed that he was gone for a while.
