A few more schools are adding their schedule to MaxPreps - there are probably more teams but my short review uncovered these.
Serra
Folsom
De La Salle
Central Catholic
St. Ignatius
Palo Alto
Jesuit
St. Mary's - Stockton
Mitty
Palma
Mountain View
Santa Teresa
Deer Valley
Northgate
Acalanes
Saint Mary's - Albany
Balboa
Dougherty Valley
Freedom
Marin Catholic
El Cerrito
Grant
Menlo School
Eastlake - Chula Vista
Sutter
Carson (NV)
Chico
Arcata
Natomas
Serra
Folsom
De La Salle
Central Catholic
St. Ignatius
Palo Alto
Jesuit
St. Mary's - Stockton
Mitty
Palma
Mountain View
Santa Teresa
Deer Valley
Northgate
Acalanes
Saint Mary's - Albany
Balboa
Dougherty Valley
Freedom
Marin Catholic
El Cerrito
Grant
Menlo School
Eastlake - Chula Vista
Sutter
Carson (NV)
Chico
Arcata
Natomas