From the Las Vegas Sun:
A brawl broke out during Palo Verde High School’s graduation ceremony over the weekend.
It’s also not known whether anyone was charged. The high school’s 585 graduates did eventually receive their diplomas. http://lasvegassun.com/news/2015/jun/11/video-brawl-breaks-out-palo-verde-graduation/
Palo Verde is considered one of the best high schools in Las Vegas as it is in Summerlin, one of the richest areas of the Las Vegas Valley.