Apple Remote Desktop?

I have a room full of Macs running Lion and would like to control what all of the people using the Macs are doing on their computers? So in other words, I would like to be able to force them to view what I am doing on my Mac, or turn off their screens completely, or monitor what they are doing.

Is Apple Remote Desktop https://itunes.apple.com/us/app/appl...09907375?mt=12 the program that does this?

Thanks.