Costanoa High School's Daily Schedule
| Time | Period |
|---|---|
| 9:00 – 10:02 | Period 1 / Advisory / Breakfast |
| 10:05 – 10:50 | Period 2 |
| 10:53 – 11:38 | Period 3 |
| 11:38 – 12:02 | Lunch |
| 12:02 – 12:47 | Period 4 |
| 12:50 – 1:35 | Period 5 (no 5th period on the first Wednesday, October–May and December 16) |
