[HAL9000]

Or it may be that their OS version doesn't support it.

The Mac OS X dock hiding option has been available since the first beta versions were released nearly eight years ago.

[the anti-liberal]

Yes, someone else pointed that out - and suggested that the school may have locked them, or something.

But the fact is, with their machines, if the dock is hidden and something is dragged to it, it doesn't come up and allow itself to be dropped on.

This means the dock has to be made really small to allow as much real estate as possible.