This website allows you to quickly and easily create a multiple choice quiz that can be downloaded and completed via a mobile device.
Once you have completed your quiz, you get a web address link to the quiz that students can access through their mobile devices via the Internet. Once downloaded, the quiz is stored on the student's phone and can be completed over and over again. When a student finishes a quiz, it asks them to enter their name and gives the user the option to send results via text message to the creator.
There is a version for organizations - users who are not in your organization will not be able to see your content.
Check it out: http://www.mobilestudy.org/home/