Ed. Code, § 89305.5

(a) Each legislative body shall annually establish, by resolution, bylaws, or whatever other rule is required for the conduct of business by that body, the time and locations for holding regular meetings.

(b) (1) At least 72 hours before a regular meeting, the legislative body, or its designee, shall post an agenda containing a brief general description of each item of business to be transacted or discussed at the meeting, including items to be discussed in closed session. A brief general description of an item generally need not exceed 20 words. The agenda shall specify the time and location of the regular meeting and shall be posted in a location that is freely accessible to members of the public.

(2) No action or discussion shall be undertaken on any item not appearing on the posted agenda, except that a member of a legislative body, or a member of his or her staff, may briefly respond to statements made or questions posed by a person exercising his or her public testimony rights under Section 89306. In addition, on his or her own initiative or in response to questions posed by the public, a member of a legislative body, or a member of his or her staff, may ask a question for clarification, make a brief announcement, or make a brief report on his or her own activities. Furthermore, a member of a legislative body, or the body itself, subject to the rules or procedures of the legislative body, may provide a reference to staff or other resources for factual information, request staff to report back to the body at a subsequent meeting concerning any matter, or take action to direct staff to place a matter of business on a future agenda.

(c) Notwithstanding subdivision (b), the legislative body may take action on items of business that do not appear on the posted agenda, but are publicly identified under any of the following conditions:

(1) Upon a determination, pursuant to Section 89306.5, by the membership of the legislative body that an emergency situation exists.

(2) Upon a determination by a two-thirds vote of the members of the legislative body present at the meeting, or, if less than two-thirds of the members are present, a unanimous vote of those members present, that there is a need to take immediate action and that the need for action came to the attention of the legislative body subsequent to the agenda being posted as specified in subdivision (b).

(3) The item was posted pursuant to subdivision (b) for a prior meeting of the legislative body occurring not more than five calendar days prior to the present meeting.