In the event of an unforeseen emergency, in the nature of either an unavoidable cost to a district or unexpected variation in anticipated revenues to a district, the state superintendent is authorized, for not to exceed two years, to make such an adjustment in the allocation of funds as is consistent with the intent of this chapter, RCW
28A.160.150 through
28A.160.210,
28A.300.170, and
28A.500.010 in providing an equal educational opportunity for the children of such district or districts.