(1) "Component school district" means a common school district lying wholly or partly inside the boundaries of a union high school district.
(2) "Split school district" means a component school district lying partly inside and partly outside the boundaries of a union high school district or an elementary district where students attend two or more union high school districts upon completing either the sixth or eighth grades. [1967 c.106 §5; 1987 c.195 §4; 1993 c.45 §69]