My class song was something moronic like Vitamen C... no wait, it was stupid, but it wasn't Vitamen C, the songs I listed before though, those would be KICK ASS graduation songs.
my high school played the song time of your life - green day, for anything of significance which was pretty lame, but at least i don't go there anymore
they also played eye of the tiger at every assembly, sports game etc which also sucked