Today, I was walking through school when I noticed an advertisement for school picture retakes. It read, "Bad hair day?" Underneath was my picture. That's my normal hair. FML
After posting this, I followed your suggestions and took it to the school. It turns out, it was two of my 'friends' who got a hold of my school pic, enlarged it, and made posters to put around. After some investigation, the school found them. You were right, the school was angry that they put my picture on display on school property without my permission. They got suspended for a week. Thank you guys for all your support and suggestions!