| Redwood High School | |
| Location: | 18400 Clifton Way Castro Valley, California |
| Country: | United States |
| Faculty: | 9.6 (on FTE basis)[1] |
| Ratio: | 18.4:1 |
| Enrollment: | 117 (2016-17)[2] |
| Type: | Public high school |
| Grades: | 9 to 12 |
Redwood High School is an alternative/continuation public high school in Castro Valley, California, United States. It is the only alternative/continuation high school in Castro Valley, and is one of only two high schools in Castro Valley, the other being Castro Valley High School. Redwood High School was remodeled from 2006 to 2008.