“Opponents of OSS in schools feel that using applications like OpenOffice.org to teach students office productivity applications would put them at a disadvantage in the workplace. Do you feel that the skills students would learn on OSS applications can transfer to proprietary applications? ”
I think students can be just as prepared for MS Office in the office environment if they are taught the basic desktop publishing concepts with OpenOffice.org and several other such applications in the class. The idea is to teach them the basic concepts and procedures of planning, laying out and editing content giving them experience in problem solving by exploring the interfaces, menus and help manuals of several applications.
What inevitably happens for students taught with open or proprietary software is that they get to the office and the new version of MS software has a radically altered interface. Just compare MS Office 2003 with MS Office 2007, or compare Word Perfect with MS Word. As for other software, Macromedia Flash changed significantly each time it came out, and then was added to Adobe Creative Suite.
I admit that students would probably prefer the proprietary professional workplace software to in some cases create better product easier. Fortunately, there are trial versions to practice with before going to the workplace.