External Auditors

When your external auditors come onsite for the annual audit is management involved in the entrance and exit exams? At my credit union the entrance and exit takes place with the SC and myself and a formal presentation is given to the board. Also is your fiscal year June 30th or December 31st?  Management has asked the SC to consider moving ours from June 30 to December 31st and i was curious to what other credit unions were doing and if there any pros or cons to either?

Thanks in advance for your responses.

Tannia Weaver