As funny as this foldable shade may appear, it can actually do some fairly useful tasks in the school. The issue of glare is huge in many classrooms. Unlike a computer desk at home, you may not be able to adjust the seating so that the screen is not washed out. This is especially true if you are using a regular room and rolling in a laptop cart once or twice a week.
The other advantage of this type of system is that it can allow students to take online tests without the problem of other students being able to read the answers. Of course, it also could prevent a teacher from seeing an inappropriate IM message between students.
Tunnel Vision: Comp Shade - Gizmodo