The offer is conditional on the students' performance at GCSE with a minimum requirement of 6 7s-9s and at least 7 grades in the 4 subjects chosen for study.

Preference is given to Priority 1/2 students, recipients of Free School Meals or children looked after by their local authority, who have a reduced threshold for interview and offer.

[8] Harris Westminster Sixth Form offers a mixed curriculum, consisting of both A Level and Cambridge Pre-U subjects.

Subjects with the smallest uptakes (presently German, Drama & Theatre, Music and Classical Languages) are studied at Westminster School.

Year 12 students also take part in 'Cultural Perspectives' courses, which aim to develop cultural capital and to broaden the curriculum.

A small number of students is invited after each lecture to Principal’s Tea where they are able to interact with the guests in a smaller group and hone their intellectual and networking skills.

[14] In 2020, the school received 44 Oxbridge offers (25 from Oxford and 19 from Cambridge), beating their own record set the year prior.

[17] Also in 2019, it was named "Sixth Form College of the Year" by The Sunday Times, with Oxbridge success and support for disadvantaged students noted.

The article describes the sixth form as a 'pioneering collaboration with a leading independent school' that 'lifts limits on sixth-formers ambitions'.

They are remarkable given that more than a third of students qualify for the pupil premium, the sum of money given to schools each year by the government to improve the attainment of children from homes with incomes of about £20,000.