I have 3 children of different ages and different level of English (well, the baby doesn't speak any language). The eldest is 7 and she speaks fluently but needs vocabulary and grammar corrections. The second is 4 years old. He understands but he is not confident in trying to speak.
The baby is one and a half, he just likes to be with his siblings.
I need some help babysitting them a couple of hours some mornings in August and maybe some evenings. If that help makes them improve their English even better.