In the grand scheme of things, it's really not a big deal, but it is a big deal.
Seeing how some families have 1st generation or rare/sporadic HS graduates, I can see how it is a big deal.
OTOH, the diploma is only a souvenir item, the real item that matters as far as applying for jobs and college is the TRANSCRIPT. If they withhold that because of cheering, that's a whole nother story altogether.
If the school district was to withhold my diploma because someone cheered for me, be it family, friend, or foe, I would tell them in no undertain terms that they could wipe their [tails] with my diploma.
But if the school district withheld my transcripts because of the same offense, I would tell the out loud "See you in court."
And in either event, I would K.I.M.
ETA: If some of these families were really smart, they would be as quiet as a church congregation---ok, bad example (
), they would be as quiet as a golf tournament crowd on the putting green until the graduate had his diploma IN HAND. Once that diploma was secured by the graduate, then the family could get krunk as all get out, while the graduate quickly exits the stage and auditorium *lol*
