It's not only the application process. Some of these programs kick out some successful applicants in the first few weeks, further reducing the field from which

It's not only the application process. Some of these programs kick out some successful applicants in the first few weeks, further reducing the field from which they pluck these success figures. To be fair, Code Fellow seems to be upfront about this, since only 88% of successful applicants actually graduate. Edit: More related to your point above, they are also up front about previous degrees held. 82% of their students had degrees before entering their program.