Sorry that i don know the answer of your question, it seems that only a few members here live in SF bay area, have you tried to ask this question in some other groups in fb? If you know how to read chinese, the group "舊金山灣區媽媽小孩同歡會" in fb is a good resource, I actually want to ask similar questions for my son's public sch, we live in bay area too ^^