David Dukes would have graduated from Gainesville High in 1977. But having fun his senior year took a higher priority than academics. After 24 years in the United States Marine Corp and 16 teach JROTC, he's joining the graduating class of '77 albeit 40 years later.
http://accesswdun.com/article/2017/5/537909/listen-david-dukes-finally-gets-his-diploma-40-years-after-high-school