The role of class rank has decreased in the past 2 years. It is still quite important, but no longer predominant as Branch Commandant ratings have increased in influence.You are referring to when class rank was the predominant factor in branch selection.The numbers do get skewed - my understanding is cadets are not told they will not get a branch. They are given a list of the top five branches USMA thinks are the best fit. Thus they know that if they put one of those 1 or 2 they will likely get it.
Self selection happens when reality kicks in when you get your class ranking. Very few cadets that I've seen still put something #1 that they knew was completely out of their reach. If you didn't put in the work to rank in the top quarter of your class, don't expect to get your #1 if you're going for something competitive. Its also still the cool part of West Point. Even with the branch feedback and mentorship happening, the majority of the branch selection still lies on you as the cadet. The work you put in is correlated to how much you control your destiny.
Good luck to all the new Army Aviators! Your new branch is a blast!
It still is. Yes, the aptitude tests and refences from officers play a role now but majority of the selection at school still relies on the individual cadet's class rank.
Branches that were once a sure thing for those in the top 25%, no longer are. Likewise branches that, without BRADSO, were once out of reach by virtue of class rank are now possibilities. This may be a good thing, but we won't know for about 6 years.