[mscman]

Except in your shortened version, you've completely eliminated what you're using to measure "achievement".

Plenty of people don't define academic success as achievement. A lot of blue collar communities consider other things as being successful.

[aidos]

Define achievement as you wish and you'll probably find it holds true. Expert pickpocket as a measure of achievement? Kids probably go on score well on that environment. And to be fair, in the right situation it's probably a pretty good measure.