Not challenging students will result in overall low student educational achievement and students in low tracks will not learn as much as their peers in higher tracks Oaks, J., & Stuart, A. (2000).
Not challenging students will result in overall low student educational achievement Burris, C., & Welner, K. (2005). Those in favor of detracking feel that it challenges the intelligence norms that are associated with race and class Oaks, J., & Stuart, A. (2000).