You can lead school kids to water, but you can’t make them drink (“School cafeterias still doing their part to offer healthy, low-fat meals,” Nov. 27). The same is true for the “healthy” school foods that University of Minnesota researchers claim kids are so enthusiastic about.

The researchers found that children continued to buy lunch when the cafeteria switched from traditional to “healthy” items. But the study stopped at the cash register, failing to address whether students actually ate the new food or threw it in the trash. Evidence supports the latter.

Black markets for candy and soda often spring up when schools ban “junk food.” And studies show that changing lunch menus doesn’t affect children’s weight. Why? Because kids don’t learn healthy eating habits from “forbidden fruit” policies. They learn by example of their parents, not the lunch lady.