Great question! The internet classes are designed for students that are unable to attend the traditional classroom setting. While the classrooms allow for face-to-face and interactive discussions, they also are scheduled for set days of the week while the on-line courses allow you to proceed at your own pace which many students prefer. Many students do perform much better on their DMV permit tests after taking a traditional classroom course because they are able to interact with a qualified instructor and ask questions and of course the classroom material is much more appealing than reading hundreds of pages of material on the computer.
If you are interested in an on-line option instead of our classroom setting, the only course we have found that meets our strict training standards is  AdvantageDrivingCourse.com. This course does contains many graphics that makes the information more understanding than the usual on-line course.