Credit and criminal is cut and dried.

"It is criminal to not pay your fair share.""

By sticking with these ratios( there are some compensating factors to move those around) we generally have less than 10% default rate.2) The turn key rental/ sell to an investor properties has these attributes-- 1) property is in decent repair (not the Taj Mahal- but decent clean housing), 2) major repairs are done, 3) tenant is screened/underwritten like when we sell on owner financing-- we do criminal background, don't care about credit as long as they paid their last landlord and the one before- or have good reason for not doing so, 4) 12 month lease, 5) sell on 10 or 12 cap (10% or 12% annual ROI) depending on neighborhood.In working class neighborhoods we sell turn keys on 10 cap, in lower income neighborhoods we sell turn keys on 12 cap. 

Which means that an employee could argue that his employer can not fire him because he did not enforce his contractual right to terminate him the last time he committed a fireable offence.

If it is not listed then the landlord can pay it, say they won't pay it and the renter does (But there is the risk they would rather shop around to find one they don't have to), or often they split it.If the market is weaker the landlords will advertise they will pay 1/2-1 month fee to an agent that brings them a qualified renter (In that case you will have them run the reports for credit and criminal and do all the income verification and provide the info).I have had lousy success listing my places with agents so I now do it myself but will work with agents.

Make sure she has the income she says she does, make sure she doesn't have a criminal history or evictions, etc.

I don't know how you would get criminal background on minors whose arrest is as a juvenile, since I believe that is sealed info.

What exactly you include is up to you but they get points for all good things (income, references, no criminal record, etc.) and no points for bad things (i.e. not filling out an application correctly, evictions, criminal records, and so on).

We are all after the perfect evidence of a good tenant: Good credit score, secure job with plenty of monthly income, no criminal history etc.

They don't stay in school and they become deadbeats and criminals just like their parents.