In no particular order or recommendation
United Flight Services - Airplane Private Pilot and above
Specialized Helicopter - Airplane and Helicopter Private Pilot and above
North Aero - Airplane Private and above, Sport Pilot, Tail Wheel
Aerodynamic Aviation - Airplane Private and Sport Pilot, Tail Wheel, Aerobatics
Hollister Soaring Center - Sailplane Private and above
San Jose Reid Hillview Airport
Aerodynamic Aviation - Airplane Private and Sport Pilot, Tail Wheel, Aerobatics
Tradewinds Aviation - Airplane Private and above
Google "san jose flight schools" for many more
Tradewinds Aviation - Airplane Private and above
Sun Dance Flying Club - Airplane Private and above
West Valley Flying Club - Airplane Private and above, Tail Wheel
Advantage Aviation - Airplane Private and above, Tail Wheel, Aerobatics
Skytrekker Aviation - Airplane Private
Google "palo alto flight schools" for several more
West Valley Flying Club - Airplane Private and above, Tail Wheel
Skytrekker Aviation - Airplane Private
San Carlos Flight Center - Airplane Private and above
Specialized Helicopter- Helicopter Private Pilot and Above
Google "hayward flight schools" for any more
Paul Hamilton at Sport Aviation Center - Private, Light Sport, Ultralight