Wash. Admin. Code § 392-121-205
As used in this chapter, "district certificated instructional employee" means any school district or charter school certificated employee who is employed in whole or part as one or more of the following:
[Statutory Authority: RCW 28A.150.290 and 28A.710.220. WSR 15-18-078, § 392-121-205, filed 8/28/15, effective 9/28/15. Statutory Authority: RCW 28A.150.290(1) and section 503 (1)(b) of the 2002 supplemental budget. WSR 02-22-065, § 392-121-205, filed 11/1/02, effective 12/2/02. Statutory Authority: RCW 28A.150.290. WSR 95-21-096 (Order 95-09), § 392-121-205, filed 10/18/95, effective 11/18/95. Statutory Authority: RCW 28A.41.055 and 28A.41.170. WSR 88-03-013 (Order 88-8), § 392-121-205, filed 1/11/88.]