The school year for all matters pertaining to teacher certification or for computing experience in teaching shall consist of not fewer than one hundred eighty school days.
[ 1969 ex.s. c 223 § 28A.01.025. Prior: 1909 c 97 p 262 § 3, part; RRS § 4687, part; prior: 1903 c 104 § 22, part. Formerly RCW 28A.01.025, 28.01.010, part.]