In just about every law school, taking credit for a copied paper would get you kicked out of school. While the consequences may not seem as dire, stealing web content that is not your own will get you kicked out of the search results.
In their quest to provide a great search experience, most search engines have instituted a duplicate content filter to catch plagiarized content. Therefore, it is vitally important that your site contains original custom content. It is equally important to remain vigilant that others are not copying your content. To see if your content has been copied you can go to either similar page checker or copyscape.
Besides the negative ranking consequences, taking content that is not yours is unethical and reflects very poorly upon the attorney who does it.