As used in ORS 343.810 to 343.835, unless the context requires otherwise:
(1) “Migrant child” means a child between 3 and 21 years of age who is in the custody of migrant workers whether or not they are parents of the child.
(2) “Migrant worker” means an individual engaged in agricultural labor who does not regularly reside in the county in which the individual is performing the agricultural labor.
(3) “School district” includes education service districts and state institutions.