i dunno about anyone else, but who gives a f*** about their class ring from hs? trust me in 2 years you wont be thinking about hs. If the ring does mean something, then that is a sign that you probably dont want to put the prediction in there.
dont get me wrong, i had a blast in hs, but your college diploma will feel much more satisfying than a class ring.
Your choice of vocabulary aside, I think you have a very narrow point of view with regard to the situation.
Baring any membership to any elite, or secret organizations, you will only ever possess in your life 3 rings that will ever mean something of value.
While it may be argued with mild success that you won't think much about HS after two, four, or even ten years post graduation, the ring will be symbolic of your time in the educational system. Twelve of the most influential years of your life isn't something most people just hawk. It will stay with you, and eventually hold nastalgic value.
A marrage band, Your College ring, and your HS class ring. It's an heirloom, and something that can and often is passed on from one generation to the next.
I think it is indeed a novel idea to have a reveal on your ring, however I think that the reveal is something like a tattoo. It should be personal, thought out well in advance and mean something to the owner. To simplify this further, I think any input from this forum here is moot.