In my experience with the USAFA glider program, both as a cadet instructor and later as the officer-in-charge of the advanced soaring program, the vast majority of students achieved the end goal of the Airmanship 451 program, which was to solo. That act completed the course.

Has the AM 451 curriculum changed whereby most students now do *not* solo (which would have to be the case to "more than double the solo rate")?