When I first read this poem in our club, I had no idea that it was about earthquakes. I thought it had some symbolic meaning about two lovers, with these ethereal images and the sense of a "we" being there in all the chaos.
Now you've submitted this poem, along with a note, I have begun to appreciate this piece even more. I could feel the fear but also the unity of human-kind.
Besides your ability to take simple, cliche themes, and turn them into something very personal and unique with simplicity ... I also admire the way you make use of enjambment. It's very natural, letting the reader breathe whenever it's necessary, but also allowing them to hold their breath in amazement.
The only critique I have is that the first two lines don't read as smoothly as the rest. I suggest changing them to this:
"If we were to sleep
with no ceiling, that night"
And remove "that night" in the fifth line.
I must say that I enjoyed the first three stanzas the most (from "If we" till "every time."), because they shift into each other with ease, and because they are packed with so much horror and sadness. The last stanzas were enjoyable too, but very different. The reader has to get used to this change in situation - suddenly away from the universe and the dreams, suddenly back in school. Don't get me wrong: it's a good thing to work with twists at the end of a poem. It's as if you were reminiscing about these earthquakes while you were in class, and suddenly the teacher wakes you up with a question. You don't care and just drift back into your memories, back to how this "you" has held your hand since September. It has a soft feeling to it.
I am just wondering what these last two lines really mean. Perhaps these events have been holding you since September, never letting go, and you couldn't let go either. But since the image (holding your hand) is quite comforting, I am a bit puzzled about it.
Nevertheless, this is indeed a piece of art. I wouldn't change too much about it.