Don't do what I did, which was the trite, cliche (can't remember author or exact wording, but you'll figure it out............hopefully): I came to a fork in the road, and I, I took the road less traveled..... Everyone's done it, even I, who can't remember who wrote it or what exactly it said.
Just put in quotes from your time there. Inside jokes and what not. You'll look back many years from now and laugh at them. And don't try to be too deep (see first part of my post), you'll end up looking back and thinking about what a jackass you were. Especially if this is your highschool graduation.