The problem with these categories is that currently, many of the "High IQ" students would fall in the "Undisciplined" category because they aren't being challenged, thus they screw around because they are bored to tears. In fact, most of the "gifted students" are like this.
These students need to be challenged to reach their potential. Instead of 100 easy, boring, repetitive math problems, they need 5-10 interesting, challenging math problems.
I was a screw-off gifted student until I went to private school for my last 2 years of high school. In easy public school classes, I was getting B's and C's. When I went to private school, the classes were actually somewhat challenging and the grading scale was much harder (95% was a B), but I got nearly straight A's.
In our current public school systems, gifted students get the shaft. Gifted students are considered special education for a reason: they need altered coursework to thrive just like the opposite end (i.e. "slow") special education kids do.