Once we changed to charging a fee, proof of ability to close, good income, a sizable reserve and reasonable credit, the students not only started taking the training seriously but actually began buying properties for their retirement.

You definitely want to use a thorough screening method like rentprep.com that gets their income, credit, background check, and call at least 3 references (make sure to verify them by address/job and then their name).  

This is why so many companies are leaving states like California.Pro-business environment: Companies want to focus on their core business, not fight anti-business policies.Significant infrastructure: Companies favor cities with substantial airports, freeway systems connecting to other cities, and more.

Specifically, I am looking at partnering with an individual who owns securities (stock and mutual funds) having them take out a line of credit against their portfolio (SBLOC) at a low interest rate, and using that to purchase properties rather than using a mortgage.

I think your future self will thank you for doing that.Perhaps take out an equity line of credit in case you need it and using a property manager.

Caution:  Personal credit card financing is a huge risk and good luck finding 0 percent interest today.

Can easily get fee worksheets and run credit/DU 3.

What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

The property value must be a minimum of $250,000 USD, and the credit score requirement is at least 700 points, among other conditions.

Bank Credit Line How did you add value to the deal?