I don't know of anyone who did early elementary to K in my CA school district. I didn't even try. The only work around I've heard of what to keep the kid in K & 1st in private school and THEN move them to the public school. There are a few private Montessori schools in my area that go up to 1st grade although it takes a bit of convincing to get them to enter their K class early.

Good Luck. If you have a meeting with the Superintendent perhaps you have a chance.