 Parents of high-ability students and other proponents of tracking say that academically gifted students should have access to classes that maximize their potential.Detracking holds back high-ability students because teachers must reduce the amount and complexity of material so that all students in the class, including low-ability students, can understand it.Putting all students together in a heterogeneous group makes the teacher's job more difficult by increasing the range of performance of the students in a class.