Good point! I'm including some but not all withdrawals and resignations in the "Don't make it" category. Since the quality of these numbers aren't as good as what I usually like to dig up from published stats, etc. it's probably a good thing for me to discuss my methods (or lack thereof) and weaknesses in my assertions.

Seems about 1 in 20 don't get through, but how this happens varies. We don't have published numbers that delineate people who resign to take a dream job from people who resign because they're not a good fit. So we can only go with direct observations and anecdotal data. That's also why about 5% and 10% were my rough wags at answering the person's questions. We have better data about who needs extra work since there are defined courses, and we can measure how many sims go into a particular candidate. But this number varies a little bit from class to class.

The poster's question, I believe, was legitimate since some airlines used to have extremely high fail rates. For someone using this job as a stepping-stone, it's a serious consideration. I think we have enough data to say, regardless of whether you like or dislike our courses, that our wash rates are in the range of "normal". 5% and 10% convey this idea with enough accuracy to help that person. In the past I shared some statistics with more robust data and effort put into them. I haven't put that level of attention into these.