note that you can obtain such a sample plan from the AAM themselves
http://www.aam-us.org/museumresources/ic/sampdoc/index.cfm
 
just ask via this email address
"...

To help the Information Center staff select documents that best fit your needs, please note your museum's discipline, budget range, and governance structure in your email request. Contact: [log in to unmask]...."

or find online examples by searching the web using the terms          

----Museum accreditation Institutional plan

Barbara Hass, retired librarian

 
In a message dated 6/25/2009 2:22:16 P.M. Mountain Daylight Time, [log in to unmask] writes:
Institutional Plan
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