My 11-year-old has been put into middle set in high school for maths and English . Will he be moved into top set if he shows he is capable or is that it ? He excels at maths and middle set isn't going to challenge him , he was marked down for silly things like not putting a space between bars and carelessness. Is it true that he is at a disadvantage to children in top set because they will be doing things that are more advanced ?