9-12
High
Ontario High School
1115 W Idaho Ave, Ontario, OR 97914 · Serves ninth grade through twelfth grade.
Supply lists by grade
These are the default lists for 2026-27. If your teacher has published their own, you'll see it on the grade page.
Teach at Ontario High School?
Claim your classroom and post your supply list, so parents shop once instead of guessing which version is current.