If your screening standards have a set minimum this can not be negotiable otherwise you have no standards.

One of the things I’m learning Is that in my neighborhood, I’m having to adjust everything I learned about screening  on bigger pockets.

So, screen and manage them well!!

I only disclose it after I initiate a dialogue with the prospect and they have been pre-screened for qualifying criteria. 

I think it's worth from the standpoint of pointing out items that would keep you from moving forward, foundation cracking, mold ect.

They meet all screening qualifications and I gave them a speech about how it has to remain two units (i.e. no knocking down of walls to make it one place, etc) but I was wondering if I should sign one lease with both units listed, or have them sign the lease twice, once for each unit of the duplex?

Do you have a high turnover rate with all the college students or do you try to avoid students when screening for tenants to get a more long-term renter?

How do you screen prospects?

I already feel the positive vibes here at BiggerPockets, so let's get it cracking as I look forward to connecting with you!"

If you were to concentrate on learning everything there is to know it could conceivably take 6 months to a year to consume along with properly researching your market.Learn your market, finances, expenses, cash flow, tennat screening, PM screening, state landlord tenant laws, etc. etc.You are at stage 1 in a 100 stage learning process, slow down.