I can see a plausible link between garden-food-awareness and learning or health. But what weight should that link be assigned, compared to everything else?<p>That is, would students with weak reading and math skills be better served by an hour in garden-education or an hour of other classroom work? Does garden-education reduce childhood obesity?<p>Answering those questions requires evidence, not just an attractive theory (or appeal to a 'broad mindset'). The author reports there is no hard evidence proving gardens benefit students, and provides some testimony that schools without gardens do more for their students.