My ds is in Year 8 and I am contemplating teaching him German myself at home, so that he can continue with French and Spanish at his secondary school and take all three languages to GCSE. I am German, his father is English and my son's spoken German is OK, although he has no knowledge of grammar, which is a big deal in German. I would use the same textbooks they have at school to guide me. Has anyone done this with their own children? Was it manageable, or will it be too much work? (I have younger children too) Any tips and advice are greatly appreciated.