Tracking is separating students by academic ability into groups for all subjects[1] or certain classes and curriculum[2] within a school.[1][2] It may be referred to as streaming or phasing in some schools.
In a tracking system, the entire school population is assigned to classes according to whether the students' overall achievement is above average, normal, or below average. Students attend academic classes only with students whose overall academic achievement is the same as their own.
^ abKaren Zittleman; Sadker, David Miller (2006). Teachers, Schools and Society: A Brief Introduction to Education with Bind-in Online Learning Center Card with free Student Reader CD-ROM. McGraw-Hill Humanities/Social Sciences/Languages. pp. 104, G–12. ISBN978-0-07-323007-8.