Nice job with subtle hints at what is going on. I’m assuming you meant to be vague. Can you smell stuff while scuba diving? I don’t know—never been. But the story idea is great, and you really leave it hanging out there as to why the classroom is underwater, hinting at a much larger reality or storyline.
LoA

Hmm, I thought you were describing visiting your school after it had been flooded, for example, after hurricane Katrina. I love the vivid details brought out as you used all five senses. Wonderful job!

haha! i have stumped the Grand Awesome Marshall!

Congrats on your tie win in this challenge!