The purchases authorized under RCW
79.17.110 shall be classified as for the construction of common *A.525.200school [common school] plant facilities under RCW
28A.525.010 through
28A.525.200 and shall be payable out of the common school construction fund as otherwise provided for in RCW
28A.515.320 if the school district involved was under emergency school construction classification as established by the superintendent of public instruction at any time during the period of its lease of state lands.