23-07-2013, 08:23 PM
To be honest I'd probably just buy another PC (HP Microserver N54L, can be had for under £100 if you look around and get it while HP have cashback going), stick in a few TB worth of storage. You can install Linux on it and set it up with some Samba shares which are easily accessible on Windows. Security might be a bit of an issue though, so the alternative would be to install Windows Server 2008 R2 on it and set up some shared folders on the hard drive using the windows accounts that are already set up for the school.