Hi, Raymond:
The best definition is from SAMHSA's report:
http://store.samhsa.gov/shin/c...-4884/SMA14-4884.pdf
And there are other reports and guides in our Resources Center:
https://www.pacesconnection.com/...ma-informed-practice
Around 100 organizations and communities have been certified as Sanctuary organizations, and hundreds more are in the process. Yes, it's long -- three years -- and expensive. I suggest contacting Sanctuary's executive director, Sarah Yanosy, who's a member of ACEs Connection.