Unprepared for a final Exam in a shifting School

"so i was back in school, not sure if it was high school or some weird combo of every school i've ever been to, the hallways kept changing style depending on which direction i walked. i had this creeping dread that i had a final exam that day for a class i apparently never went to, not once, and somehow i only remembered this while already standing outside the classroom door i went in anyway and everyone was already seated, heads down writing, and the teacher didn't even look surprised to see me which almost made it worse. i sat down and the test was already on my desk and every question was in a language i couldn't read, not gibberish exactly, just wrong, like my brain refused to process it as language at all i remember trying to ask the person next to me what page we were supposed to be on and they just looked at me blankly like i hadn't spoken. time felt like it was speeding up too, i kept glancing at a clock that jumped minutes at a time instead of ticking normal then it shifted completely, i was out in the hallway again except now i was looking for my locker and couldn't remember the combination or even which hallway it was in, walking past rows of lockers that all looked slightly different from what i remembered mine looking like somewhere in there i ran into an old friend from actual real life, someone i haven't spoken to in years, and we just talked normally like no time passed, that part was oddly calming actually, before the test dread came crashing back in woke up feeling weirdly tired, like i'd actually been stressing over a real deadline, took a second to remember i don't have to take that test"