Interruptions

School keeps getting interrupted and it's driving me mad. Often children come over before we've finished and then we end up letting them join in or just giving up. Or they come over to collect K for school, but way too early so then hang out and we can't get on. Or ladies come over to bake. I need to get better at saying no but I'm rubbish at it. At least there's no chance of us getting bored!