Do modern homes use electricity that is arranged in series or in parallel circuits?

In a modern home you use parallel circuit's. The reason why they are parallel circuit and not series is For example: say your kitchen light goes off, if that light goes off the others in your house won't. They also use parallel circuit in schools.

However, when there is a switch in the circuit, that switch is in series with the load, so you could say that electrical wiring is arranged in series-parallel.