Better that they throw out the bread than eat white bread. White bread is just empty calories. And some of the kids will eat the whole wheat.
I suspect, in time, more kids will be okay with the whole wheat bread. I know people raised on 2% milk who find whole milk unpleasant, because they're not used to it. Of course, a lot of these kids will be having vast amounts of white bread at home :/ So, it'll be hard to make the transition when they start school. But I still think it's worth a try.
Re: Regarding the school-lunch programs:
I suspect, in time, more kids will be okay with the whole wheat bread. I know people raised on 2% milk who find whole milk unpleasant, because they're not used to it. Of course, a lot of these kids will be having vast amounts of white bread at home :/ So, it'll be hard to make the transition when they start school. But I still think it's worth a try.