This despite the fact public employees supposedly have First Amendment rights.
The administrator in question apparently resigned over the matter.
The alleged female abuser resigned after being interviewed by the district over the video, but currently faces no charges. She has not been identified by police or the Alhambra Unified School District.
The district says it was alerted to the video on Friday. They prepared the following memo to send to students and staff: "The Alhambra High School administration contacted the Alhambra Police Department immediately upon discovering the link. The matter was handed over to the Alhambra Police Department who immediately began their investigation."
The Alhambra School District says no students at Alhambra High School have come forward with allegations against this administrator. Alhambra police have now passed this investigation on to the Riverside County Sheriff's Department and the San Bernardino County Sheriff's Department.
The administrator's license will be revoked, but, as some people in the comments following the last link noted, the former student wasn't supposed to record the conversation without the administrator's consent. It is illegal in California.