I don't want to use Windows. I won't work for anybody that forces me to use Windows. I can choose where to work. Children are forced to go to school, it is obligatory. That's why it is not okay to force children in schools to use Windows.

Computers for children are used for convenience or to solve problems. Neither of which requires Windows, or any other vendor-specific platform.

It's neither justified nor necessary to force children to use Windows or any other specific operating system in school.