The third product announcement coming from Google today (Google Sites Templates and Image Swirl were the previous two) is an improvement to Google Scholar. Google Scholar now allows you to search for, find, and read full text legal opinions from US federal and state district courts, appellate courts, and the Supreme Court. You can search for opinions by case name (like Miranda v. Arizona) or by topic (like school busing).

Applications for Education
Google Scholar’s addition of legal opinions could be very useful for teachers and students of US civics. Google Scholar could help schools reduce or eliminate the need to purchase updated legal opinion books every few years.

A related resource that may be of interest to you is Yale’s Avalon Project.