Final answer:
Research on tracking in education demonstrates impacts on student performance and inequality, but the statement that detracking penalizes high achievers is not universally supported. Therefore correct option is B
Step-by-step explanation:
Research on tracking in education, a system of classifying students into advanced and low achiever groups, has shown several impacts on student performance. One aspect that research has consistently shown is that students in lower tracks often receive less challenging material, leading to poorer academic outcomes. This system is also influenced by non-academic factors such as race and social class, suggesting that equal scores do not always lead to equal track placement. However, the claim that 'detracking penalizes high achieving students' is not widely supported by research. The idea that detracking lowers the collective grade by removing incentives is not always validated by existing research.