You will have to contact Rockwell, and they could assist you better. Is your plan to move later this year or earlier? Both schools are fantastic, it just depends on your time frame. You could also contact SF and see if your child could start attending now, so that he can get started without having to change his routine.
Here is a link to the county school district website where you can confirm the schools affiliated with a specific address.
Are you working with a Realtor to help you locate a home? If not yet, please give me a call and I'll help you sort it all out.