i have made a program for my school which the teachers use to setup and control thier CA, then its up to them if it dont work
they run the program, select the details of the CA, add the users from from Sims click "Create CA" and it creates folders,
Subject, Date, Teachers name, Time in a Fodler on the network (R drive) also assigns a Logon name to the student (we have 100 accounts already setup Exam01, Exam02,,,,) , the folders are locked when created,
the teacher can print this list any time to tell the students what logon name to use
when the teacher is ready to do the CA they open the program, click Unlock which assign the permissions to the folders for that CA, e.g. Subject, Date, Teacher Name, Time, the students then logon with the exam account, and save the work into the R drive (the only they have)
once the CA is over the teacher clicks Lock and the program locks all the folders for that CA, the teachers can access that folder at any time
about 3 teachers are using at the moment and it seems ok, some small problems but easy corrected
i have a help file if anyone want to email me
Thanks