Sandi was born in L.A. and grew up in the west valley and was an original "valley girl." She has a B.A. in film and television, and an M.F.A. in screenwriting both from UCLA. However, in later years she went over to the dark side and joined the faculty at rival school USC and has been teaching there since 1988 in the School of Cinematic Arts. She is also a freelance journalist and writes about television for several magazines including "Written By" (Writer's Guild of America), "Life After 50" and "Whole Life Times Magazine."