Cal. Ed. Code § 44808.5
The governing board of a school district may permit the pupils enrolled at any high school to leave the school grounds during the lunch period of such pupils.
Neither the school district nor any officer or employee thereof shall be liable for the conduct or safety of any pupil during such time as the pupil has left the school grounds pursuant to this section.
In the event that the governing board grants such permission, it shall send the following notice along with the notification of parents and guardians required by Section 48980 :
"The governing board of the ____ School District, pursuant to Section 44808.5 of the Education Code, has decided to permit the pupils enrolled at ____ High School to leave the school grounds during the lunch period.
"Section 44808.5 of the Education Code further states:
"Neither the school district nor any officer or employee thereof shall be liable for the conduct or safety of any pupil during such time as the pupil has left the school grounds pursuant to this section."
Ca. Educ. Code § 44808.5