I'm Lost

I work training institute, like a school, and a co-worker found this stuck on the bottom of the bin under the shredder after a busy day of exams. I don't who the person was, or if they ever found their way out of that pink square, but the biggest mystery is how it was in this bin without being shredded? If it was a creative writing exam I'd say: "fail" - If it was an art class, I'd say "A+"!