Oregon Revised Statutes Education and Culture § 338.145

(1) The public charter school shall be responsible for providing transportation to students who reside within the school district and who attend the public charter school. The public charter school may negotiate with a school district for the provision of transportation to students attending the public charter school.

(2) Notwithstanding subsection (1) of this section, the school district within which the public charter school is located shall be responsible for the transportation of students attending the public charter school pursuant to ORS 327.043 in the same manner as students attending nonchartered public schools if the student is a resident of the school district. However, a school district may not be required to add or extend existing bus routes or other transportation services pursuant to this subsection.

(3) Students who attend public charter schools and who reside outside of the school district may use existing bus routes and transportation services of the school district in which a public charter school is located.

(4) Any transportation costs incurred by a school district under this section shall be considered approved transportation costs for purposes of ORS 327.013 in the same manner as transportation costs incurred by the school district for transporting students who attend nonchartered public schools are considered approved transportation costs for purposes of ORS 327.013.