WHO NEEDS IT and HOW DO WE KNOW?

Enrichment programs are aimed at more able learners.
Some kind of assessment must be determined when identifying students as gifted and deciding which students will benefit from an enrichment program. It also must be a consistent method. However there are still questionable methods used today.
“Instruments used for student assessment to determine eligibility for gifted education services must measure diverse abilities, talents, strengths, and needs” (Landrum, Callahan, Chaklee, 2001 p.44).
One method used is the Stanford Binet IQ instrument. Students scoring 136 or higher are labeled as gifted. This method leaves a wide margin for error in the recognition of gifted students. All students deserve a fair chance.

QUESTIONS:
What about students that excel in other areas, not just academics? How does this system recognize students with other areas of giftedness?
Is enrichment just for students who do well over all? Is it needed for students who excel in just one area?
Can all students benefit from the right kind of enrichment?