You can tell if your tall by going to the doctors andcheck your height and the average height of your age group.Also if your the tallest kid in your grade.
You can usually tell by your family. If both of your parents are tall and so is your grandparents when they were younger then you are most likely to be very tall. It all depends on your genetics. It...
legally they can't. There is something called patient confidentiality which means that they cannot tell anyone if you go to them with an issue. There are technicalities if you are under 16- but if...