Some examples you might find are: drug and alcohol abusers, women (with children) who were abused by their male partners, mental health program participants, senior citizen housing, those with physical disabilities.

You get a lot of learning and earning done in this process while limiting risk to just a few dollars (my students risk only $50) max on any one deal.

I am looking for a REI club in this area to participate.

I am currently considering student housing in Philly due to what seems like consistent cash flow and some price appreciation as the Universities continue to build out.

The plan specifies "Participants and beneficiaries can obtain, from the plan administrator, without charge, a copy of the plan's procedures governing Qualified Domestic Relations Orders."

While @Bill Gulley is correct, the actual information is here:  http://ma.mypublicnotices.com/PublicNotice.aspYou won't find the information, however, if the publication used does not participate in the website. 

Make them ask you for the opportunity to participate, "I'm considering partners or arrangements with other people" "would you be interested in looking at this in detail?"

You can see how most of Grad students are not going to be looking for the $650-$1400 because they simply can't afford the rent.  

I have heard Philadelphia has a solid student rental market but would like to keep away from that since these properties don't tend to appreciate much and kids can really put a strain on the properties. 

You might consider Niche or Specialized Housing like student housing.