Whenever the average daily attendance of any school district has been materially affected in any school year by conflagration, public calamity, or epidemic of unusual duration and prevalence, the regular annual reports of the teacher, the school principal, or officers of the school district, shall be accepted by all school officers for all school matters appertaining to the school district, except that of average daily attendance.

(Enacted by Stats. 1976, Ch. 1010.)