Because I can get applicants with no credit score (such as grad student/ post docs) that is why I don't set a number.

Because I am a full-time college student and I work part-time I ask that the interested parties submit a rental application before I show the house, but many of them refuse to give a rental application unless they can see the house first.The criteria for what I look for in a rental application are as follows:Credit report: I look to see if they have had at least 90% or higher on-time paymentsBackground check: I look to see if they have ever been evictedJob and rental references: I look for a steady income and make sure they can afford it with what they make I also call their current landlord to make sure they have been a good tenant and confirm the information the tenant gave me.I currently have it listed at $1650/month with a 12-month lease.

High turnover and having the option to rent out to students or young professionals.

This is why it is important to enlist the services of an attorney sooner rather than later and have a reserve fund to cover all expenses until you are able to take possession of the property.

So apparently many insurers won't give us insurance for a property that has students (undergrads or grads) living in it.

I have read some of the comments where some people offer referrals fees and practically take possession of the client. 

As a student of history and electoral politics, my hypothesis was a flat no, and the research did verify at least most of my assumptions.However, I could have written a book about this topic, and I really don't think I can answer the question succinctly enough in 2,500 words.

I started in Real Estate investing in 2013 when my daughter went to college ( first investment was student rental), i still own that house and several others in the town, not all student rentals. i look at this as my retirement in the near future and my kids inheritance should i ever pass.

I recommend talking to @Gino Barbaro, He coaches students to invest in Multifamily, rising money through Partnerships and Syndications. 

How are summer months handled with students?