California Code, Elections Code - ELEC § 9502

Based on the time reasonably necessary to prepare and print the arguments, and to permit the 10-calendar-day public examination as provided in Section 9509, the person conducting the election shall fix and determine a reasonable date prior to the election after which no arguments for or against any school measure may be submitted to him or her for printing and distribution to the voters. Notice of the date fixed shall be published pursuant to Section 6061 of the Government Code. Arguments may be changed until and including the date fixed by the person conducting the election.