There's been an upsurge of interest in school gardens recently, due both to the interest in promoting healthier eating in our children, and in encouraging environmental studies. The Royal Horticultural Society is running a campaign, supported by Alan Titchmarsh and Chris Collins. The Kids Garden has some great ideas too, as does Growing Schools. Some of the large supermarkets are supporting these schemes, and the National Trust has joined with the Yorkshire Bank to promote greener school gardens in Yorkshire, as part of their greener gardens campaign.
I recently designed a wildlife garden for a school, which can be viewed here. I can't help feeling that the development of school gardens must be beneficial on so many levels, for both young people, teachers, school neighbours, and the environment in general.