Washington Revised Code Title 28A. Common School Provisions § 28A.310.140. School district to be entirely within single educational service district

Every school district must be included entirely within a single educational service district. If the boundaries of any school district within an educational service district are changed in any manner so as to extend the school district beyond the boundaries of that educational service district, the superintendent of public instruction shall change the boundaries of the educational service districts so affected in a manner consistent with the purposes of RCW 28A.310.010 and this section.