less abstract, and more engaging for pupils. The school adopted the textbooks and examination regime of the School Mathematics Project (SMP) which had been pioneered at a number of other private schools. The final period of every Wednesday was set aside for the sixth form to attend lectures, usually with a current affairs theme. Speakers have included public figures such as trade union leaders Ray Buckton (ASLEF) and Hugh Scanlon (AEU), boxer Henry Cooper, philosopher A. J. Ayer and astronomer Patrick Moore. In 1968, Taylor was succeeded by Michael Hinton who was himself succeeded by Alan Tammadge in 1971. In 1976, the school first admitted girls and moved from being a single-sex school to a co-educational one. In 2012, the independent review of A level and IB results, based on government issued statistics, ranked Sevenoaks School first in the UK, ahead of Westminster (17th), St Paul's (22nd), Harrow (34th), Winchester (73rd) and Eton (80th). Controversies Fee-fixing cartel Between 2001 and 2004, Sevenoaks School orchestrated the Independent school fee fixing scandal, a fee-fixing cartel involving fifty prominent independent schools in the United Kingdom. It was subsequently found guilty of operating a fee-fixing cartel by the Office of Fair Trading. The Independent Schools Council – a lobby group funded by the independent schools in question – said that the investigation had been "a scandalous waste of public money". Inflation of predicted grades In June 2020, The Guardian reported that, as formally codified as a school policy in the staff handbook, Sevenoaks School had for 'many years' exaggerated the predicted exam results of '1 in 12' of its students (20 per year). This policy was outlined in full in July 2020 by The Daily Telegraph, which revealed that 'in around 20 cases a year' the school inflated predicted grades 'to facilitate the application' of the student to university. Mary Curnock Cook commented that it was 'embarrassing for Sevenoaks that deliberately overpredicting students’ grades is in writing in their guidelines'. The Charity Commission stated that it had engaged with the school over 'a broad set of concerns including predictions' and 'governance concerns', with which investigation the school said it was 'cooperating fully'. UCAS confirmed that it had already sent the school a reminder of its guidelines, and the Department for Education warned that 'Schools should not be inflating predicted grades'. The school 'refuted any suggestion that we would unfairly exaggerate UCAS predictions' and then