I found the edublog: 500 Hats: the teacher librarian in the 21st Century very helpful in relation to a CDP. It suggests that such a policy offers guidance for the direction of the collection and ensures that one specific agenda does not dictate the collection (Braxton, 2016). This ensures that the collection as a whole isn’t biased or skewed according to a particular viewpoint (Braxton, 2016). This highlighted to me that by having the CDP it acts to set the guidelines and provides clarity and purpose that also provides greater accountability. Having the policy endorsed by the school Executive means that it can be used as a tool to defend decision making if these are ever questioned (Braxton, 2016).
Braxton, B. (2016). Sample collection policy. Retrieved from http://500hats.edublogs.org/policies/sample-collection-policy/