If you are looking for a tool to help your students study their vocabulary you might want to try Quizlet. Quizlet is a very simple free website that lets you create vocabulary tests based on words and definitions you provide. You don’t even have to type them, if you have lists generated already you can upload them. Once the words are in it allows your students to move through 3 steps, Familiarize, Learn, and Test. It also allows them to print word lists and flash cards. The tests are very nice and include spelling, true/false, matching and multiple choice questions. Here is a link to an SAT vocabulary set you can try on your own.
As a teacher you can sign up for Quizlet for free and create your own vocabulary lists for practice tests, enrichment, and study aids. When students access the tests it randomly creates an individual test for them. Once completed it corrects their work and offers them the chance to take another randomly generated test.
Quizlet is a nice web site that is worth checking out.