@Jin Kim I completely understand where you are coming from, as I am a landlord in a college town as well, but be very careful with your screening based on these demographics.

A huge mistake was buying a duplex THEN learning how to screen tenants, create rental agreements and set ground rules.  

You could wait for the Fed to continue to raise the interest rate, until they cause the next Crash in the Markets and "Buy when there is Blood in the Streets." 

If its not yet a great area you may have tenants who will need EXCESSIVE training and screening.

@Tony Velez Your success will depend on the quality of the rental agreement and how well you enforce it, as well as how well you do your tenant screening in the first place.

Screen potential tenants with a professional standpoint from top to bottom.

Sure, we could do this on our own but if you have ever screened tenants you will know that it can be a full-time job just answering phone calls and following up on emails.

There's no uncomfortable situation about not wanting to show the property to someone.I state very clearly in my ads and the YouTube video that I do not conduct showings until the person has made it to the second phase of my screening process.I don't understand why anyone would show a property to someone who is not qualified to rent / lease the property.  

Sorry I see typing on the little screen  I missed putting that qualifying point in.

@Tim Vecchioni, those numbers look blurry on my screen, but from what LOOKS to be written there, that "red" expenses number is LARGER than the "green" income number!