Sandy,
If you are an education major you get the accredidation with the BA. Unless they made a change lately that's what I was told for CA as well. Now if you change majors or switch to teaching after the BA it takes a couple years or three, that's what I did since I already had a BS. By the time I was done I only had 6 credits to go for the MA in Curriculum. So I got them while student teaching.
The state is also the one who sets the teachers standards and evaluates the credentials of the applicants.