Civic Ecology is coming out as an eBook from MIT Press. I will check with them to see about the status.
As for school gardens, my expertise is not with what you actually plant. My Cornell colleague Marcia Eames-Sheavly wrote her Masters project thesis on involving the whole school in a school garden--you might be able to find this by searching her name and Cornell. My interest in school gardens would be how to involve parents and elders in the community in sharing their knowledge about gardening, plants, and the connection of plants to their cultural background with kids. This is what we did through the Garden Mosaics program, materials from which you can find on the American Community Gardening Association website. and here is a recent article. http://www.aspiremetro.com/garden-mosaics/
about Garden Mosaics in Long Island NY.
Marianne Krasny, Cornell University