<P> Tracking has been shown to produce less academic achievement for low - ability students , and higher academic achievement for high - ability students ; de-tracking would increase the achievement of the worst students and harm the achievement of the best students . Critics say that not challenging all students with the most advanced curriculum results in overall low student educational achievement , and that students in low tracks do not learn as much as their peers in higher tracks , e.g. , advanced mathematics . </P>
one result of tracking in school is that
students in low tracks do not learn as much as their peers in higher tracks