A debate continues over whether schools should group students by academic ability or teach them in mixed-ability classes. Proponents of each grouping claim it lifts student performance and achievement. However, while selective grouping can offer short-term efficiency, in my opinion, mixed-ability groups generally achieve stronger overall performance and fairer education for every student.

Supporters of ability grouping argue that it lets teachers match instruction precisely to each academic level. For example, teachers can accelerate high achievers without constant revision and provide targeted support for struggling students. Consequently, advanced classes progress rapidly, which may raise examination performance and sustain motivation among the most able students.

However, mixed-ability groups can produce deeper learning through peer interaction and collaboration. Indeed, when students of differing academic strengths collaborate, higher achievers consolidate their learning by explaining concepts, while weaker students achieve accessible support. Furthermore, this diversity avoids the stigma and fixed mindsets that streaming by ability often creates, which can depress a student's effort over time. In practice, schools that differentiate tasks within mixed groups often see more consistent achievement across the whole class.

In conclusion, although grouping students by ability may deliver efficiency, its educational benefits are limited and potentially divisive. Therefore, in my opinion, mixed-ability learning, supported by thoughtful differentiation, better promotes sustained achievement, motivation and equity for every student. Schools should prioritise mixed groups while using flexible strategies to raise each learner's academic performance.