California Code, Education Code - EDC § 48201

(b)(1) Upon a pupil's transfer from one school district to another, the school district into which the pupil is transferring shall request that the school district in which the pupil was last enrolled provide any records that the district maintains in its ordinary course of business or receives from a law enforcement agency regarding acts committed by the transferring pupil that resulted in the pupil's suspension from school or expulsion from the school district. Upon receipt of this information, the receiving school district shall inform any teacher of the pupil that the pupil was suspended from school or expelled from the school district and shall inform the teacher of the act that resulted in that action.

(2) A school district, or school district officer or employee, is not civilly or criminally liable for providing information under this subdivision unless it is proven that the information was false and that the district or district officer or employee knew or should have known that the information was false or the information was provided with a reckless disregard for its truth or falsity.

(3) Any information received by a teacher pursuant to this subdivision shall be received in confidence for the limited purpose for which it was provided and shall not be further disseminated by the teacher.