Wooly School Garden allows you to register your school garden and and helps seek private donors online.
Wild Ones/Seeds for Education -- Grants for school gardens and community nature areas
Fork and Bottle
The Heirloom Vegetable
Jung Seed Company
Native American Seed
Park Seed Company
Seed Savers Exchange
Zones and Frost Maps
Maps courtesy of Wisconsin Horticulture, UW-Extension Cooperative Extension.
Starting a School Garden
Steps from forming a Garden Committee to where your garden will be planted.
The Sustainable Table
School garden & food projects
My Healthy School
Five steps to starting a garden
National Gardening Association
How to start a garden in a local school