It is very hard to find out of state classes that meet the CA requirements, mostly because CA DMV just doesnt' want to recognize out of state classes. She can enroll in a CA class and take a leave of absence and try to complete that way. Otherwise, you need to go to the alcohol coordinator office in the court of conviction and see if they can help you locate a MO class that will qualify, but caution, what may qualify for the court, may not qualify for the DMV.
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CA DMV won't accept the out of state classes so it won't clear up her license. I suggest calling the MO version of DMV to verify that she has fulfilled all MO requirements. If she has, call the CA DMV Mandatory Actions Unit at (916)657-6525 to inquire what she must do. Best of luck.
CA requires that DUI offenders take classes in CA. It is very difficult to get approval of another states program. DMV Mandatory Actions Unit in Sacramento might be of help.
Andrew Roberts (818) 597-0633/ (805) 496-7777