Why? Perhaps they didn't apply for that particular course or they didn't make the grade for no other reason that the other candidates, irrespective of gender, race creed or colour, were better than they were.
BA employ based upon the best person for the job after the application of a stringent testing process that has no bearing on race, gender, colour, ethnic background or nationality.
If you pass, you're in.
I don't see why it is 'shocking' in any way, the process is open and fair to all.
Bl**dy Daily Mail readers.