Teachers Linda Olson, left, and Robin Yankus compare their schedules in the newly-built portable classrooms. Back to school day at McNary High School on Wednesday, September 4, 2019 in Keizer, Ore.

Back to school day at McNary High School on Wednesday, September 4, 2019 in Keizer, Ore.

Jose Zavala, center, helps students with their schedules. Back to school day at McNary High School on Wednesday, September 4, 2019 in Keizer, Ore.