Oregon Revised Statutes Education and Culture § 334.019

(1) A school district board that withdrew a school district from an education service district as provided in ORS 334.015 may choose to rejoin the school district to the education service district.

(2) A school district board that chooses to rejoin a school district to an education service district as provided in subsection (1) of this section may rejoin by an affirmative vote of two-thirds of the members of the board. A vote described in this subsection must occur no later than November 1 of the year prior to the year in which the school district board plans to rejoin the school district to the education service district.

(3) The school district board shall notify the board of directors of the education service district no later than November 1 of the year prior to the year in which the school district board plans to rejoin the school district to the education service district. Within 60 days of receiving the notice, the board of directors of the education service district shall issue an order that recognizes the rejoining of a school district to the education service district.

(4) The rejoining of a school district to an education service district becomes effective on July 1 after the board of directors of the education service district issues the order described in subsection (3) of this section.