Our big objective is finding an investor or group of investors who can purchase and renovate a building for our school.How would I go about finding an investor or investors for this project?  

Basically, the typical," you don't know what you don't know", situation.

And upon completion of the project I can get the loan refinanced to a traditional mortgage?

Investors that have a good deal, say maybe the total costs of the project is 50% of the ARV, seem to think that's enough for a lender because if anything goes wrong, they can just take over the property and "make more money" that way. 

On the other hand, we would have the opportunity to learn the basics of management from an experienced career real estate investor, and perhaps slowly be able to convince him to sell his properties.

@Joshua McFarlin, below are links thorough posts covering the basics of MHP valuation.  

We have access to a project manager and a team of VAs who do general admin tasks, transaction coordination, and marketing.

My accountant does have some experience with it and they basically set up the Chart of Accounts and transaction classes for me.  

The city is still continuing to develop, since they've only completed about 50% of the approved construction projects.

Our current goal/focus, however, is getting our first project with our own capital off the ground.