-Take note that your insurance will go WAY up when you convert this property to a rental. You also get a lot less coverage (for example, contents coverage is gone). Talk to your insurance agent first.
-Remember income tax law effects-you will have to start depeciating the house when you convert it to rental. This has the positive effect of sheltering current income, but it comes back to bite you when you sell the rental. Also when you sell the rental, profit you make off it is taxable (barring a swap), even a paper profit whereas with a minimal amount of effort the average person can shelter any gain off the sale of their home for life (up to 500,000 in gain). It would be more complicated in your case as some of the profit is attributable to when the property was your home.
-check your mortgage, nearly all allow you to move out and rent after 60-90 days, but some require you to live there so long as the mortgage is in force. Usually the restrictive ones as from a special loan program.
-Finally: Rent to college students-ARE YOUR CRAZY? Just torch the place, it's quicker and the same result with a lot less grief (even counting the prison sentence for arson).
Talk to a few landlords, being a landlord is a lot more involved than cashing a check once a month.
In Texas, my insurance is actually quite a bit cheaper. As low as 1/3 in some cases. In our state, we use one type of policy for home owners, and another for rentals called fire dwelling. The renters are then responsible for renters insurance, which is stated in their leases.
The local property tax authority, however, will raise taxes higher on rentals because they don't have the Texas homestead exemption. Not sure how it works in other states, so I would suggest a call to the local taxing authority to find out.
As far as depreciation, this is correct mostly. Depreciation is a tax shield against business income, not personal income. So if his rental only makes $100 per year, his effective depreciation is only $100 per year. Therefore, it is not as if he is liable for the entire depreciation schedule in recapture when he sells. Depreciation is a benefit, not a detraction, because it shields current business income, and if the investor so desires, allows them the ability to build their business, tax deferred, for as long as they wish. Not many other business models have this advantage.
Also there is the 1031 like property exchange, where one can avoid (defer) capital gains taxes upon subsequent deals for as long as one wants, as long as they follow a couple of rules. Real estate is the most tax advantaged investment there is.
If you rent to college students, have a strong lease and enforce it, and you won't have any more problems than you do renting to anyone else. I have several properties near a college, and they are BY FAR the most profitable ones I own. I wish all my properties were next to colleges.