Proms

Prom season is coming up and im starting to wonder when we suddenly became obsessed with them. Not only are secondary schools having them but they have now extended to Primary Schools.
But in all honesty are they an actual prom (ie what you see in the movies) or just a regular disco thats over exagerated??
I had a prom when I left school, the year before hadnt, the venue was at the Hilton Hotel, 3 course meal and a disco after, that to me is a prom, but going to the school hall is not.
Now my lil sister is leaving primary school and they are having a “prom” (basically an exagerated disco) and I can totally see the point in doing something special as they have basically grown up together from nursery-year 6 its a long time, but to label it as a prom and spend stupid amounts of money?? I personally dont think its worth that.
