After graduating from St. Paul High School in Santa Fe Springs, California, where he was a member of California state runner-up team in 1978, he went on to play football at Cerritos College and Weber State University.
He earned a bachelor's degree from California State University, Long Beach in 1988.
From 2004 from 2006, Jellerson served as the assistant head coach at Utica College and then moved on to Western Washington University from in 2008.
On November 18, 2010, he was named the interim head coach at Whittier on a permanent basis.
This biographical article relating to a college football coach first appointed in the 2000s is a stub.