Hmm, well that may be, but it doesn't change my essential arguement about the context with the use of the word "privilege."

I think it is more likely intended to educate those staff about the various differences in experiences the students they're working with may have had.

I think this only helps to prove my example, if anything. It may have been to open teachers eyes to the facts that while many students may come from a well-off backgrounds, or even all from lower class backgrounds, the privileges they've been given by their parents and/or families can vary greatly, and to not make assumptions about life experiences.