One of my heroin users, with Hispanic first and last names, surprised me during an interview.
I was asking him the usual interview questions, and when I got to "highest level of education completed" instead of the usual, "I dropped out in 10th Grade and thought about getting a GED but never got around to it," he told me that he had a Masters. When I asked him "in what?" I learned that he was a rabbincal student ... couldn't speak a word of Spanish, but his Hebrew was perfect, at least according to our Israeli psychologist who spent a lot of time working with him. He's from an Orthodox Sephardic Jewish Family. Apparently Heroin is kosher.
He's still using heroin, but he has family bring him books on Kabbalah when he's inpatient.