I do find her research interesting, but agree that it is often misused. In terms of tracking, there is often a misconception about meeting students at their level and tracking. I think it is important to both meet students at their instructional levels, while giving them access to grade level material. Core + interventions at level help students close the gap rather than being "tracked" throughout their whole school experience. When this happens, they never catch up, but instead stay progressively behind their grade level cohort. I think sometimes the jargon gets thrown around so much that we lose sight of the real purpose...doing our best to educate kids in whatever way best meets their needs.