You can keep your teaching job and do this on the side, part time won't be as demanding on the body.

I think you should report that agent to the realtor's governing body and have that investigated...I'd guess the realtor could lose their license if there is a way to prove what they have been doing.

So I'm wondering what people think about volunteering with Habitat for Humanity to learn about rehab and associated costs. 

Amass a convincing body of proof that the property is not worth what the school district insists it's worth.

It depends on the property though, for easy to value homes (subdivision with other similar models that sold recently and have consistent pricing) the computer will value and make the offer and send it out instantly, for more difficult homes humans will do the value and are supposed to send it out within 24 hrs but sometimes they get behind.

@Sergio Ortiz, I would love to explain any portion of my situation in greater detail, I tried to include as much as I could in the body of this discussion but I was limited on my break time at work and figured I could go to deep into everything.

This was an auto body shop and paint booth for over 20 years and not used for mechanical work much at all. 

You have to be careful though because sellers (even banks, they have human asset managers) are emotional animals.

A client was in body shop business owned 1 ac of prime land. 

It's difficult not to let human sided creep in.