Paper Rater is a very nice resource that allows teachers OR students to check their papers for spelling errors, grammar errors, writing suggestions, and even plagiarism. We all know you can easily check spelling and grammar in nearly any word processing software. However, Paper Rater also checks the content in your paper against an Internet Search to see if the content was copied from the Web. Some of the best features of Paper Rater are that the site is TOTALLY FREE. They even have a pricing link on the page that, when clicked, further reiiterates the site is completely free. Also, you do not have to sign up to use Paper Rater. You simply click "USE Now FREE" and you are ready to go.
Next time you are checking Research Papers and one paper seems WAAAAAAAAAAY better than it should be or if you want to be honest with your kids and show them Paper Rater as a tool before they turn in their work, check out Paper Rater.