Or. Admin. R. 581-011-0165 – Instructional Materials Adopted by the State Board of Education

(1) The State Board of Education shall adopt a list of instructional materials, aligned with the subject matter cycle adopted by the Board, that school districts may use to comply with ORS chapter 337. The list shall remain in effect for a period established by the Board at the time the subject matter cycle is adopted, not to exceed ten school years.
(2) The subject matter cycle means the State instructional materials adoption schedule adopted by the Board as required by ORS 337.035.
(3) Pursuant to ORS 337.120, district school boards shall adopt instructional materials for each grade and subject field for which instruction is provided by the district from the approved list except as otherwise provided by ORS 337.141 and OAR 581-022-2350.

ORS 337.050 & ORS 337.141

ORS 337.050, ORS 337.035 & ORS 337.055