Check the URLs – A site’s URL can tell you a lot about the quality of the content it might contain. College and university sites typically end in .edu and can often be a great source of accurate information. For K-12 teachers, other schools’ pages are often a useful resource. These sites often end in .k12.us.  

Make sure the site's intent fits your needs and is appropriate for your students -  Be sure that your sources deal with your topic in a way that fits your own needs.

Check the reading level – Many sites written for general audiences may not be suitable for younger readers.

Try to avoid another students work – The Web is a great way to share student accomplishments. Just remember that posting something on the Web doesn’t guarantee its accuracy.

Stay with factual information - Depending on the age of your students, you can either filter this bias in your selection of resources or include sites which have specific points of view. Facts are easier to use and grade.