I endorsed my Oklahoma RN license into California during this past summer and had no major issues. The process took about 6 weeks from start to finish, which is relatively fast for the California BRN. Be aware that the California BRN is very picky when it comes to evaluating your nursing school transcripts. The evaluators want to see certain prerequisite courses and corequisite classes on your transcripts such as sociology, micro, etc. If you have any deficiencies, they will give you one year to correct them.