Fortunately it did teach me how to find good deals and from that was able to buy several rental houses in C class areas. 

Where we live, $100k annual income is upper middle class.

Mix between middle and high class 3% (or so) unemployment rate!

We get them once in a while, but not often in our property class. 

The houses next door are beat up c class.

Most of it is for multifamily apartments but these ratings flow into single family rentals too.A class = 0-10 years old, luxury apartment class, full amenities, great neighborhood, schools, etc.B class = 11-25 years old, several amenities, well maintained, good neighborhood and schools. 

You don't have the temperament for out of state C class investing my dude. 

From just looking today, I see a Class A office with higher yields than multifamily in the same area. 9% cap rate in Grandview Heights / Upper Arlington Area.

Not only do they have forms that are vetted by lawyers annually to keep up with changes to the law, they often have overviews and classes on the law changes.

You are in treacherous waters here ... the prospective tenant told you they were receiving disability making them a protected class so be careful.