Schoolsweek website.

https://schoolsweek.co.uk/eef-group-pupils-within-classes-rather-than-setting-or-streaming/

Education Endowment Foundation.

https://educationendowmentfoundation.org.uk/evidence-summaries/teaching-learning-toolkit/setting-or-streaming/

NUT.

https://www.teachers.org.uk/edufacts/setting-and-streaming

Advantages of streaming.

https://wehavekids.com/education/STREAMINGThe-benefits-of-streaming-in-secondary-schools

The benefits and disadvantages.

https://m.scirp.org/papers/71741

Guardian article argues against.

https://www.theguardian.com/education/2014/sep/25/school-streaming-pupils-english-primaries