The ICT_Works blog has come out swinging: Linux vs. Microsoft is the most useless debate in ICT4D
As would any sane-minded person after being subjected to a shouting match in Kyrgyzstan. And the core point is absolutely valid - when you're talking about educational outcomes, there is no effective difference:
Educators stressed that teachers already had extensive training on Windows software and would be confused, even lost, in the Linux environment. Students who learned Linux and LibreOffice would be at a disadvantage in the job marketplace as employers would only hire staff that are fluent in Microsoft applications. [...] All of the adults in the conference learned how to use computers back when Windows 98 was in vogue, some even started with Basic, yet no one complains they cannot use an iPhone, iPad, or even MacBook without training.