Anyone using the the scholarship method shouldn't really worry about the cost of the scholarship. I know that in the US and the UK you can deduct 100% of the scholarship you donate.
There is some paper work involved, but there's paper work in any endeavor.
A student benefits, you are not out of pocket any cash because at the end of the year you get it back as a tax deduction.
I like to think of it this way. I can buy links and get the government to pay for it!
That is really a Win for the student, and a Win for you !