Almost a year since lock downs and many still not lifted including in person education.There is ample data that restrictions control the spread of viruses and again without knowing what would have happened in CA had they not put the restrictions in place, you cannot say they didn't work just by comparing to a different sample. That said, if they are not adapting to improved knowledge that is a problem....I cannot say one way or another whether that is the case or not.
They've failed.