They are so far away from the professional world that anything they learn that is specific to any kind of software or technology will be completely obsolete once they've left school.
They should be doing something fun. The best thing that can be done is to point kids in directions that make them want to do it on their own - self-directed study and show them resources where they can find out how to do things. And let them form groups to create projects and don't limit them to just glowing phosphors on a screen. Lego Mindstorms (and its descendants) comes to mind.
They need to learn that computers are tools for creation and creativity.