600 min credit score to high?

[Emory Clayton]

As part of my minimum requirements, tenants are required to have at least a 600 credit score. I require tenants to fill out a pre-qualification before the house can be shown. As part of the pre-qualification, one of the questions that is asked is if they meet the minimum credit score of 600. I have had a lot of interest in the house, with numerous pre-qualifications come in, but almost every one states they don't at least have a 600 credit score. At that point I reject the pre-qualification because they stated they don't meet the minimum requirements. I haven't had this property for very long (under 2 years) so I don't have a lot of historical data to go off of. House is in a class C neighborhood, so its mainly being targeted by traditional blue collar workers, entry level white collar jobs (to give context). 
So l've been asking my self, is my minimum too high, do I need to re-evaluate what this should be? I have read in other places/forums that some people do not have a minimum credit score listed, however they still use it to gauge the quality of a potential tenant. I do not side with that idea. My belief is the credit score is an indication of your financial situation, and is something that cannot be overlooked. What say you? 

[Richard F.]

A Credit Score is far less important than what goes into arriving at that score. You need to review and understand all of the facts in the report itself, and all other facts you uncover during your screening process. These should include court cases and traffic records, actual verification of employment/income, job history, and other relevant info based on the actual application. You need to look for missing, or contradictory bits of information such as a different address on their Pay Stub compared to their self reported address. Gaps in employment- what is the reason? Every detail. 

Here is a chart from Equifax for their FICO scoring system, which speaks to the odds of your Tenant going delinquent within a 24 month period: