High Schools in Castro Valley, CA Castro Valley High School19400 Santa Maria AveCastro Valley, CA, 945465105375910High SchoolsPrivate Schools K 12Public SchoolsSan Lorenzo High SchoolRedwood Alternative High Schl18400 Clifton WayCastro Valley, CA, 945465105373193High SchoolsPrivate Schools K 12Public SchoolsSan Lorenzo High SchoolShow More