take (someone or something) in as (something)
To provide a home for someone or an animal while they are of a particular age or status. John's grandfather took him in as a boy after his parents died. We took the dog in as a stray, and now he's a part of our family. The country took me and my family in as refugees a number of years ago.
take someone in as something
to make someone a member of an organization. We took her in as an associate at first. I took in Karen as an associate.