HD security ideas?

[clairmnt@n2.net (Clairemont High School)]

Hi all.
 
I will be setting up some hard drives for some GS machines
for use in a HS classroom. To prevent casual student mucking about,
I would like to hide as much of the system as I can.
 
I am wondering:
 
* Is there a way to prevent the control panels from showing up in
        the Apple menu?
 
 
* Is the a way to hide the entire menu bar? (I thought I once saw
        a utility to do this, not sure why I would want to now)
 
* Is there a way to hide the preferences options? This one pretty crucial 
	as I figured the easiest way to protect folders was to set invisible
	attributes for "sensitive" folders.
 
many thanks for any answers or other security ideas!
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clairmnt@n2.net	   A classroom account for Clairemont High San Diego, CA
Louis Cornelio, teacher	  Check us out: http://www.n2.net/clairemont/