Here's a very helpful booklet on best practices in school gardening. There is information here on making gardens handicapped accessible, planting strategies, container gardens, themed gardens, and much more.
Moz's Spam Score metric helps quantify the relative risk of penalization/banning by search engines using a series of correlated flags. This post helps explain where you can find Spam Score, how to use it, and the R&D behind its development.
Fifty Best Practices for Living a Well-Designed Life