Wash. Admin. Code § 392-202-015
As used in this chapter, the term "principal/administrator" means one of the following:
[Statutory Authority: RCW 28A.03.532. WSR 89-19-032 (Order 14), § 392-202-015, filed 9/14/89, effective 10/15/89; WSR 87-23-005 (Order 87-15), § 392-202-015, filed 11/5/87.]