Having attended so many of these graduations at higher level, i can only say that the ceremony itself is pretty silly to take seriously - if everyone would just chill this wouldnt be a huge problem. The thing is that you got school administrator people who thinks that this is the be all end all ceremonies, and conduct it like this will the end of their teaching careers.
Anyone who has gotten a degree knows its a joke : It is an achievement, certainly , but not a significant one. Its like birthday - everyone celebrates it, but no one with a highschool degree can use it for any kind of job that requires an education of any sort. All it does is allow the student to spend the next 20,000 dollar on their university for the next 4 years, the graduation of which does not guarantee any placement in life either.
Its such a boring event, why not REQUIRE people to cheer and have a contest on whose party can cheer the loudest? In my university, every year they also give an honorary degree in something to an accomplished member of the society. Honestly, education is a laugh and a half.