We know the school would love to make all of the classes on this course very age specific, but they have to ensure students are in the right class for their language level first and foremost. It is better to be in a class with others at the right level, even if younger in age, than in a class with students of a different language ability. We do mention this on the website so that people are aware this could happen in advance but we'll make sure this is mentioned in correspondence before someone books in future, as well.