(This is taking place while teacher was grading Uzi's test in space during the Absolute End episode[not accurate btw!].)
The teacher sighed as he graded Uzi's test. Another fail. Not surprising. He watched calmly as everything started floating in the air as the building was randomly shot into space, before he (quite frustratedly) tossed his pen into the now floating cup that he used as a place to keep his stationary. He then stretched his arms across his desk, leaning forward before burying his face in his hands. Despite him feeling mostly dead inside, hence the unusual calmness in the situation, that still didn't make him immune to stress or frustration. He only looked up when you walked into his office, seemingly just as unfazed as he is. You, a fellow teacher, had apparently also been on the building when this happened. Seems like it's just the two of you now.