A bit of background DD3 15 year 10 has always felt that she is academically inferior to her two elder sisters, despite also passing her 11+. This is because both her sisters achieved 10 A* stars at Gcse DD1 now a 2nd year Chemistry student at Cambridge. DD2 yr12 doing the IB wants to follow her sister to either Cambridge or Oxford. DD3 by contrast will have to work hard to get in to her Sixth Form that reqiures B grades and the odd A grade.