[K12OSN] unusual shared folder for teachers

[Daniel Howard]

I just set up a 1:1 classroom for an language arts teacher so students 
can spend much more time doing their essays, etc. on the PC in class, 
start digital portfolios, etc., and one request from the teacher that 
came up is to have a shared folder for students to drop copies (and 
serve as backup) of their documents, but have it so that students can 
drop folders there but cannot read other's work, and in particular not 
delete other's work, so permissions have to be set in a new way (for me 
at least).  Then, after the teacher edits their work, he wants to put it 
back on their desktops.  The teacher has a classroom server running 
K12LTSP 5EL (I just couldn't get the old laptops working right in 
K12Linux, sadly), and he has about 100 student accounts for his 5 
classes.  Any advice?

Also, I'm going to train him on how to use fl_teachertool, but won't get 
to until after Thanksgiving due to our schedules.  Is there a simple 
command he can issue in the meantime from the command line on his server 
to log all users off at the end of one class so that students don't sit 
down and start doing things on another student's account (like cyber 
bullying)?  After a while, students will log in to get their customized 
desktops, but for now I want him to have a way to force things.

Any other suggestions for a 1:1 language arts class that would really 
show the power of a classroom server-based thin client system?  I have a 
highly motivated teacher who considers himself the 'luckiest teacher in 
the state' to get this system and a 1:1 in his class.

Best, Daniel