Don't worry about 'home-schooling' your grandson when you return to England Gagajo; he will only just be three, and you are ideally placed to concentrate on all the pre-learning skills: speech and language, so important and improved by talking to an adult who listens to him and talks back; rhymes, songs,puppets, sharing and talking about books, particularly without words without words, talking about everything he does as he does it , any thing to develop language skills. Imaginative play, puzzles, games, jigsaws, shape and space toys, motor skills playing with plasticine, cutting, sticking, painting, lego, duplo and learning the correct pencil grip, so sadly neglected by early years; learning to dress and undress himself. Follow the lead of the nursery in phonics and number, but all the above skills are where you can really give him one to one attention and help him. And nothing wrong with television. watch it together and talk about it, then switch it off and do something else.