From Calpreps pre-season ratings:
School League 2017 2018
| 1. Cardinal Newman NBL-Oak | 10-3 35.7 | 24.2 |
| 2. Rancho Cotate NBL-Oak | 10-2 32.8 | 10.2 |
| 3. Vintage (Napa) VVL | 7-3 20.6 | 2.7 |
| 4. Napa VVL | 3-6 10.1 | 1.1 |
| 5. American Canyon VVL | 7-4 20.1 | -0.3 |
| 6. Windsor NBL-Oak | 5-6 6.5 | -1.1 |
| 7. Carrillo NBL-Oak | 4-6 -.8 | -3.9 |
| 8. Ukiah NBL-Oak | 6-5 .8 | -4 |
| 9. Analy NBL-Oak | 6-4 8.7 | -11.7 |
| 10. Petaluma VVL | 8-2 6.8 | -11.8 |