[K12OSN] Student problem

[John P. Conlon]

I have a lab teacher who needs things set up so that her students can't 
print unless she enters a password at their desktop.  What is currently 
happening is that the students are typing extremely nasty notes to her 
and because of the lab layout she hasn't been able to catch the 
culprits.  The students are using Open Office for their word 
processing.  Two things that I can think of would help her solve this 
problem but I don't know how to implement them.
1. How can I create a drop folder for her that is accessed through OO's 
File Save As command?
2. To prevent students from printing unless she has approved their work, 
how can I set up a password on the OO print feature?

This same teacher has also had problems with students entering 
Pornographic Internet sites when her back is turned.  What changes do I 
need to make in the users file to deactivate Internet access for thoe 
students?

Please be fairly detailed in any set of instructions.
Thanks
Bye
Pat