My son has begun grammar school this year and is getting on well-working hard and playing hard! I don't think school has had any classes about sex yet, but he is interested to know how babies are made etc. First of all, should I leave it up to the experts at school or should I maybe buy him a book on the subject? My daughter didn't find out about the whole shebang until 3rd year (year 10) and I thought that was very late. Also, my husband is not great about being sensible with him when it comes to talking about personal matters-he tends to make jokes and my son gets irritated with him. How can I try to encourage my husband to be more sensitive with him, without hurting my husband's feelings?