Creepy!

I just got this package in the mail from my old school in Oregon. It was full of my old papers, and stuff. I looked through the whole thing with confusion. There was no note explaining what this was, or why they were sending it. And the strangest thing was, my mom and I had sent two thank-you notes for the nice going away party they planned, and they were in the letter...opened. In my letter, I think I mentioned "write back soon" or something. But still, until now, I've never gotten anything from the school, teachers, or classmates. The whole thing, (though it's not that scary), sends some shivers through my spine.