My reply... even though I was quite upset, I tried to keep my comments as nice as possible.
After reading your article, I feel it necessary to point out a couple of things you may have overlooked.
First, Macs are compatible with PCs. Nothing special should be needed, heck, even PC floppy disks are compatible. They both use Microsoft Office, so thats not an issue either.
Secondly, Macs may only have 4% of market share in the "world" but inside schools, they're much closer to 60% or higher. Schools get tremendous discounts on Apple computers, which is why they've stuck with them for so long. Also, your argument can be used here too, it'd be totally unfounded for a school to switch away from Macintosh to PC. The majority of computers in schools are Macs, so lets just go with the majority.
Also, look at how much cheaper the Macs have been than similar PCs. Many schools are still using Macintosh computers that are 3 or more years old. In the world of PCs, 3 years is way past the lifespan of a system. So not only are the schools paying to replace the PCs more often, but there is the additional expense of hiring additional IT staff to remove the viruses and spyware that clutter any PC based computer (but because of added security in Macintosh, don't exist for that platform).
If were using a computer as a tool for education, shouldn't we go with whats prove, whats cheapest, and what is currently getting the job done? Why should we go with something else, just because it may make a few students who are afraid to ask about the compatibilities between Macintosh and PC more comfortable. It could even be argued with spyware and viruses, PCs are available less... in fact, in the industry PCs are only functioning properly less than 60% of the time, compared to near 100% for Macintosh computers.
Thanks for your input, look forward to your reply.