Is there a way to keep someone from disconnecting the wireless network?  Here is a little background on the issue.

This is a school environment and the school has laptops for the kids to use.  The problem is that even as restricted users, the kids can get to the Available Wireless Networks via the system tray icon.  Using Group Policy I had Windows hide connected networks.  This took away the system tray icon but the student can bring it back by toggling the laptops wireless on/off button.  This brings the icon back long enough for them to get the available wireless networks list.  The kids end up disconnecting the wireless networks which then result is us getting emails from teachers saying the laptops "don't work."  My only work around to this is hiding the notification area using group policy but it would be nice for a teacher or student to verify they are connected.  Other than building a radius server and controlling wireless via group policy (Server 2003 R2 by the way), is there a way to restrict access to the wireless networks list.  I have denied everything under the sun in terms of network settings under group policy and none of it seem to do anything.  Any ideas?

If you don't have it yet, you're going to want to buy DeepFreeze from Faronics. You set up you equipment how you want it to be and then install this software which prevents any permanent changes from taking place on the computer. Kid delete stuff or otherwise screw up the laptop, just reboot and you're back in business!

In your case after installing this on the laptops, you'd tell your teachers to simply restart the laptop to correct this issue. Otherwise, I know on our Dell laptops you can turn off the wireless button in the bios making the wireless control software only.

Good Luck! 

You could look into SteadyState, which is a free Microsoft Product.  http://www.microsoft.com/windows/products/winfamily/sharedaccess/default.mspx.  I never used it because I was only looking for a solution for a couple of pc's that we have.  This might be more up your alley.  It is the same principle of setting up a computer once, and then rebooting to get it back to the original approved settings.  Any changes made by a student will be void.

Good Luck