But that's the point. We do get powercuts or a breaker trips and the lights go out. It tends to be daylight, so they can continue to teach for a while, same with the heating. If it becomes a problem, then we close the school. That's where the tethered laptop comes in. The Office Manager can access parentmail even though the phones and internet are down. I'm not saying teachers should have a physical Plan B for every lesson. In the very rare event that they lose the internet they should be able to improvise if they know their subject.

