First off, let me offer my welcome to the forums. It's always good to see more people join and share their experiences. While I have not personally taken the Intro to Law Enforcement test, the feedback on it makes it seem VERY passable; this is from good sources too.... Please read these postings:
http://www.instantcertonline.com/for...ment-dsst.html
Information on each test can be found in the Specific Exam Feedback Section on the forum's main page. This section is a great place to start when deciding which test to take, or researching study materials. Seeing as you're about done with your degree, this may be a moot point, but it still may help other newer members.
With the proper amount of study, I'm sure you will do well. Check out the other feedback and let us know if you have any other questions; we're here to help each other. Let us know how it turned out too, your feedback on the test will be added to the collection. Welcome again, Lee