This has to be the funniest thing I have read in relation to Linux, a teacher claims Linux is not free and possibly illegal. The teacher discovered a student showing off a laptop with Linux installed and giving away free copies and then made her ignorant claims about Linux.
My two kids aged 7-10 years old don't use Windows at home. They know more about computers now than anyone of their ages who use Windows. Just as I did when I was a kid and had an 8bit computer which helped and encouraged my understanding of computers. Then Windows came along and destroyed this by hiding the computer away from the user and not supplying tools to do anything with the computer. For example if you wanted to become a programmer on my Amstrad CPC it came with Locomotive Basic and the ability to write machine code and it also had CPM operating system. With Windows you get nothing, unless you fork out for it, although to be fair you can now get Visual Basic and C# now. But with Linux I can load up my software management software, select a category, for example Development and then choose a language of choice. This could be PHP (my career option), C, C++, Mono (for .net and c# development on other systems than Windows), Ruby, Java and any relevant IDE to help develop with.
My kids are also experimenting with graphics software and doing really well with the likes of Blender 3D and Inkscape. My son has been creating his own comics and has been showing so much imagination.
So this is holding them back apparantly........