Hi,
i thought that before however remote desktop is not possible as you need to download google test browser (No IE, FF or chorme) which once enable you cannot do anything on system and it close every process running on PC (ofcourse leaving default ones)
Why not 3-4 members here give exam together (including me) ? It will be help ful.
Well, run the google software on a virtual machine. Sure it will lock down everything in that virtual machine but it won't touch your main machin, then just resize the window and get on skype with a few dozen of your favorite Google Guru's.
Problem solved.