We don't live in San Francisco, but I was reading that the SF public schools no longer Algebra I in middle school! You start that in 9th grade. My child in public school and different city took Algebra I in 7th grade. It's not called that anymore due to Common Core, but he got a 96% all year in it.
He takes accelerated math classes in the summer at the community college, which helps a lot. I think it's really sad though that their public school district is doing that.