Holy Names University in Oakland has an annual Kodaly study program, and this includes a concert that is open to the public.
I can't find details on their web site, but here's what circulated on my neighborhood mailing list:
Judit Hartyányi, Conductor
Friday, July 30, 7:30 p.m.
Holy Names University
Please join us for the 42nd annual Kodály Summer Institute Choral Concert!
The Institute chorus and various smaller groups within the institute will
perform sacred and secular music from the Renaissance through the 20th
century by Weelkes, Willan, Tóth, Kodály and contemporary composers from
within the Institute.
This concert is free to the public. Donations are welcome at the door.