What problems arise if I let multiple users logging into the same user account on a Windows 2008R2 Remote Desktop Session Host Server

I have a Windows 2008R2 server running as a Remote Desktop Session Host server with 60 device CALS. I am getting ready to run ISTEP Online + testing, which has a test delivery client application installed on the server. I have already ran this program during a stress test with each of the students logging in as different users, and it works fine.

I also have the same program installed on stand alone computers at another school where the students log into the computer using a common user account to launch the program. Once the program is launched, the student must enter their personalized ISTEP login name and password, which is maintained in an online database.

Since I can have multiple students log in as the same user account on the stand alone computers and successfully run the test delivery client, is there any reason why I couldn't do the same on the remote desktop session host server, as long as I disabled the "Restrict each user to a single session" setting?

Thanks, in advance for any help.

Dave