Power Cards are often used with Autistic children, but I believe they can be helpful for all children. Power Cards are highly visual and they contain short blurbs or lists of information that will help a child in various situations that he may come across.
A better way to deal with disruptive students in middle and high school. Print these out on quarter- or half- sheets and hand them to students who are off-task or disruptive. Or laminate a few and have dry- or wet-erase markers on hand. A behavior slip forces the student to think about their actions and how they can prevent them in the future, without taking up extra class time for discipline! Students are less likely to act up if they know they'll have to fill one of these out every time.