Windows is NOT just as easy.
Issue One: License compliance. You have to make sure you each machine has a legit copy of windows. Making the assumption these systems have an OEM copy of Windows and knowing what it takes to pass a BSA audit they should have the following: A copy of the invoice for the hardware which shows what verion of Windows is on it. Not just "Windows XP", but "Windows XP SP2". Then they need the Original Windows install media. They should also have a bill of sale or something to document the donation. Plus the maching should have the Windows Licence Key Sticker on it. I know no one crosses all the T's and dots all the I's, but that is what it takes to be in compliance.
Issue Two: Software compliance. You have to make sure you are legit on the software on the computer. MS Office, WordPerfect, PhotoShop, etc. So now you have to do a software audit on the computer. Or you can skip ahead to Issue Three and just wipe the drive and reinsatll the OS.
Issue Three: Cleanly installing the OS to bring the computer back into compliance or to kill the spyware , Cant have a pirate copy of Windows 7 installed on there. If the machine came with XP S2, You have to install that from the original media. Many times people don't even bother to make a set of backeup media. If the system is old enough to use original media instaed of a backup set. then you need drivers for the computer. You may or may not have been given the driver CDs/DVDs. Even if you have, those drvivers are buggy. That means you need to get drivers. So off to to Dell. or HP, or whoever to get the drivers.
Issue Four: Installing the same software on all systems. And again, if any of this is nonfree software, pay attention to license compliance.
And I am not joking. Anyone can phone in and ask for a BSA audit. The school system can decide they don't want to sign on to another 3 years of "MS Software Advantage" at which point the friendly MS rep will remind them that they will be audited for compliance. This is serious stuff.
With Linux all they have to do is toss all the paperwork and CDs. Install from a CD and then check off a list of packages in Synaptic/Software Center. If they partner together with a local linux group/guru they can get an install image with everything already set up. They can even mass blast intalls over the network out to multiple machine. With widnows that takes you to
Issue Five: Purchasing additional licenses if you desire to reimage systems.
I am not saying Widnows is NOT the way to go. There is a lot of great commerceal educationl software. But the license compliance and routine audits are time consuming. You need to have written polices in place about installing and copying software. You need to pay for this software. You have to update a variety of programs with different updaters.
It is NOT as easy as Linux is. It you use a .deb based sytem and only install software from repos. You can image machines, and use batch updates
Issue Six: Heterogeneous computing environment. Windows XP home, Windows XP Professional, Windows Vista Home Basic, etc. Complex environment. The Home machines can't join a domian, cant be administered with group policy. XP using Documents and Settings, Vista using Users. This adds complexity to taking care of these machines.
Then there are other advantages. I can patch, update, modity and work with all of the Ubutnu systems from cli even when there are users logged into the desktop. Even if I have to install an app with a gui I can always do a "vncserver :5" and start up a new desktop that does not interfere with user desktop.
Please do not tell me that it is as easy setting up a computer lab ruinng widows with random donated hardware as it is with Linux. Unless you have a lot of manpower, experince and finances. At that point you could more eaisly create a Widnows Lab with all new Hardware.