Nothing disturbs me more than looking at a Red or Brown Belt having problems with Yellow Belt kicks or (god forbid) forms, but those students have mostly fallen into the same rut I see many of my contemporaries falling into. Many people set a goal for themselves... "I want to reach black belt by the end of the year"... "I want to drop weight by the next competiton"... Whatever. The problem is that most of the time, these students work so hard to achieve their goal, they stop working on those skills not directly associated with it. This ties in with your concerns in the liklihood that these students never really LEARNED the skills or developed them to their fullest in the first place. It's likely that they just learned enough to get by on their test. Have faith, though. These students usually either snap-to and straighten themselves out or quit. At any rate, assuming there is some sort of standard of excellence, substandard performance will probably not get them by on their advanced rank tests. "To whom much is given, much is expected."