Dismayed by deception

I am a senior at Colony High School in Palmer. This last Friday we were told to take out a piece of paper and write down a statement verbatim. The statement was basically to the effect that finals were this week and that we get out of school the 20th of December. We were then told to sign the paper, and once they were all collected we were told they were going to be used as writing samples to compare with recent bomb threats and graffiti.