Index searching is an effective way to find information for a given subject. Secondary sources often have multivolumes, and for relevant subjects material can be included in different volumes. Searching and finding the indexing term for education law can help you quickly identify relevant pages. Be careful, though, publications do not use standard indexing terms (e.g., an encyclopedia might use education law and another might use schools and education). For Education Law, the indexed term usually is listed as a top level index, with related education law subjects listed below in alphabetical order.
Digests collect major cases, summarize them, and organize them by legal issues. When would you use Digests? A digest is useful when you already have identified and researched a specific legal issue, and you want to find specific case law. Once you find a relevant case you can expand your research by by shepardizing or keyciting the case.