Schools
| School Name | Level | District |
|---|---|---|
| Concordia Lutheran | Elementary School, Middle School | District 4 |
| Concordia University | College | District 1 |
| Condon Elementary | Elementary School, Middle School | District 6 |
| Condon High School | High School | District 6 |
| Conestoga Middle School | Middle School | District 15 |
| Connections Alternative School | High School | District 8 |
| Cook Elementary | Elementary School | District 14 |
| Cooper Mountain Elementary | Elementary School | District 15 |
| Coquille High School | High School | District 7 |
| Coquille Valley Intermediate | Elementary School | District 7 |
| Corban College | College | District 4 |
| Corbett School | Elementary School, High School, Middle School | District 2 |
| Cornelius Elementary | Elementary School | District 3 |
| Cornerstone Christian | Elementary School, Preschool | District 4 |
| Corridor Alternative | Elementary School | District 12 |
| Corvallis High School | High School | District 11 |
| Cottage Grove High School | High School | District 12 |
| Cottrell Elementary | Elementary School | District 2 |
| Country Christian School | Elementary School, High School, Middle School, Preschool | District 13 |
| Cove School | Elementary School, High School, Middle School | District 6 |