California Code, Education Code - EDC § 5092

Whenever a provisional appointment is made to the governing board of a school district pursuant to Section 5091, the board shall, within 10 days of the provisional appointment of a person to fill a vacancy which occurs or will occur, post notices of both the actual vacancy or the filing of a deferred resignation and also the provisional appointment in three public places in the district and shall publish a notice pursuant to Section 6061 of the Government Code. If there is no newspaper of general circulation published in the district, notice need not be published.

The notice shall state the fact of the vacancy or resignation and the date of the occurrence of the vacancy or the date of the filing of, and the effective date of, the resignation. The notice shall also contain the full name of the provisional appointee to the board and the date of his appointment, and a statement that unless a petition calling for a special election, containing a sufficient number of signatures, is filed in the office of county superintendent of schools within 30 days of the date of the provisional appointment, it shall become an effective appointment.