LA County, posts: "Active COVID-19 Outbreaks in TK-12 Schools by Outbreak Site, Cases, and Contacts, Los Angeles County Department of Public Health, Data through 09 Jan 2022". Their definitions of outbreak are:

-- Epidemiologically-linked means that the cases were present at some point in the same setting during the same time while infectious.
-- Outbreaks that are active means that there has been at least one COVID-19 case that is epidemiologically-linked to the outbreak cluster within the past 14 days.

They list 58 staff members testing positive in the last two weeks. Only 1 of those cases is tied to a classroom. All of the rest are from sports. For perspective, on January 4th, 2022, LA County racked up 55,257 cases, and in the 14 days ending on 09 Jan 2022, we had a total of 464,544 cases.

ONE case of covid in a staff member tied to a school classroom, out of 464,544.

Sources:

publichealth(dot)lacounty(dot)gov/media/Coronavirus/education/index.htm

dashboard(dot)publichealth(dot)lacounty(dot)gov/covid19_surveillance_dashboard/