Mathematics & Double Mathematics

Department Overview

The Mathematics Department aims to:

  • enable all pupils to learn to appreciate the beauty and usefulness of mathematics;
  • teach in a stimulating manner and convey our enthusiasm for mathematics;
  • enable all pupils to achieve a grade reflecting their true ability in all public examinations in mathematics;
  •  teach pupils to think for themselves.

Pupils are also encouraged to take part in both the UK Intermediate and Senior Mathematics Challenges, with considerable success.

All pupils take Edexcel IGCSE Higher Level Mathematics at the end of Fifth Form (Year 11) and the top two divisions also take AQA Additional Further Mathematics. Many of our pupils continue to study the subject successfully in the Sixth Form and beyond. Universities and employers value Mathematics, particularly in the fields of Law, Computing, Science, Engineering and Economics.

For full details of the curriculum, please use the link below.

Curriculum | Internal Page

Department staff

Dr Alex Page, Bsc, MSc, PhD, PG Cert, QTS - Head of Mathematics 

Dr Page joined Charterhouse in 2019 from RGS Guildford where he was Deputy Head of Maths. In addition to being an experienced teacher of Maths and Further Maths, he is also an experienced Physics teacher, qualified to teach both subjects at all levels.  Dr Page has led Oxbridge preparation for Mathematics, Economics, Engineering and Natural Sciences, including preparing pupils for STEP and MAT.  Prior to RGS he taught at New Hall School, Dauntseys and Millfield.  He was an Acting Housemaster at New Hall and Assistant Housemaster at Dauntsey's.  He was educated at The John of Gaunt School in Trowbridge before studying for a BA MSci Natural Sciences (Physical Sciences) at Queens’ College, Cambridge.  Amongst his notable achievements he has been a question setter for Radio 4’s ‘Problem for Today’ and been part of the Quarter Finalist team in University Challenge! Dr Page is a keen sportsman, coaching cricket, rugby and shooting; as well as being heavily involved with the Duke of Edinburgh award scheme.


Dr Stephen Marshall, MMath, DPhil - Second in Department

Stephen Marshall completed his undergraduate degree at the University of Oxford, gaining one of the top Firsts. After completing his doctorate, Dr Marshall stayed at Oxford teaching undergraduates for a number of years, before moving to the investment bank, Goldman Sachs.  At Goldman, Dr Marshall wrote computer programs to help to price commodity derivatives and manage risk.  Subsequently, Dr Marshall returned to his first love, that of teaching, joining Charterhouse as a Mathematics beak. Aside from his teaching, Dr Marshall has special responsibility for organising IB Mathematics and he writes the School timetable.  Dr Marshall is also involved with Pioneers, Swimming and Water Polo.


Mr James Silvester BSc, PGCE - Head of Under School Mathematics 

Graduating from The University of Exeter with First Class Honours in Mathematics, Statistics and Operational Research, Mr Silvester has been a member of the Charterhouse Mathematics Department since 2007. He is Head of Under School Mathematics and is charge of the curriculum up to and including IGCSE. He has experience of delivering the IGCSE, A-Level, Pre-U and IB Mathematics Curriculum across all age levels and abilities. In the Specialists, he has taken a lead on teaching the IB Mathematical Studies course since its inception at Charterhouse in 2010, as well as teaching the statistics components of the Pre-U Further Mathematics course. 

A talented sportsman, Mr Silvester represents Great Britain in Racketlon and has competed at both the European and World Championships. Notable successes include winning silver in the European Team Championships in Prague, Czech Republic before winning gold in the World Team Championships in Copenhagen, Denmark as well as a World Tour Title in Riga, Latvia. He continues to travel regularly around Europe to compete. He plays county tennis for Buckinghamshire and competes in the national tennis leagues in both Great Britain and France.

Mr Silvester also coaches sport to a high level, holding qualifications in coaching tennis, football and badminton. He is the Head of Tennis, co-ordinating the school’s entire tennis programme which sees up to 22 teams compete on match days throughout the season. He is U15A football coach and also assists with the Charterhouse Badminton programme after having previously running it successfully for 5 years. A keen runner, Mr Silvester has also competed in various marathons both within the UK and abroad.

Pastorally, he has been Master of the Removes and an Assistant Housemaster in both Fletcherites and Hodgsonites for 8 years. 

Miss Louise Batty, BSc

Miss Batty was educated at The Maynard School, Exeter and gained a BSc in Mathematics and PGCE at the University of Durham before joining Charterhouse in 2005. She spent six years as the Assistant Housemaster of Gownboys and is also heavily involved in running outdoor educational trips, taking overseas expeditions with World Challenge to Madagascar, Tanzania, Bolivia, Ethiopia and India. Miss Batty coaches both the boys and girls Hockey and Tennis teams.

Mr Rich Castro, BSc, MDiv

Mr Castro grew up in Surrey and was educated at George Abbott School before earning his BSc in Mathematics at Exeter University. He taught at Christ’s Hospital for 15 years, eight of which were as a Housemaster. Mr Castro attended the Reformed Theological Seminary in 2012 to undertake his Master of Divinity, which he completed in 2015. His interests include badminton, The Telegraph crossword and the Christian Union.

Mr Richard Hall, BSc, MSc 

Mr Hall was educated at The Billericay School in Essex before attending Northern Illinois University as a scholar-athlete, where he gained a BSc in Applied Mathematics and Economics. Following this, he continued his studies at University of Warwick, where he achieved MSc in Financial Mathematics. Mr Hall joined Charterhouse in 2019 from bet365 where he helped the Forensic Monitoring team build a machine learning approach to tackling malicious user behaviour. As an avid sportsman, he enjoys a variety of team sports including football, rugby, basketball, cricket as well as individual; golf, surfing, kitesurfing, sailing and cycling. 

Mr Andrew Hunt, MA

Mr Hunt graduated from Cambridge with a Degree in Astrophysics in 2004. After a year teaching English in Laos, he returned to the UK to teach Mathematics at Emmanuel College, Gateshead, where he had been a pupil, and then taught at Oundle for three years before joining Charterhouse in 2009. Andrew took up the post of Housemaster of Lockites in September 2016 having previously held the posts of Assistant Housemaster of Gownboys, Head of International Pupils and Weekend Provision, Head of Peer Support and Head of Under School Mathematics. 

Mr Hunt teaches Mathematics, is in charge of the Christian Union and is keen on all sports, particularly tennis. He is a keen musician and plays jazz and classical piano, violin and bass guitar. Mr Hunt is also Housemaster for Lockites. 

Dr Philip Langman, MEd, PhD

Dr Langman gained BSc and PhD in Mathematics from the University of Southampton. He spent a few years working in logistics and engineering before moving into teaching. Dr Langman's first role was working with young people who were not in education, employment or training, or at risk of offending. He came to Charterhouse to teach Mathematics, and since then have held various other roles including Master of the Yearlings, Assistant Housemaster and a number of years as Housemaster of Girdlestoneites.

Mr Charles Marsh, MA 

Mr Marsh was educated at Giggleswick School, Yorkshire and the University of Cambridge (MA & PGCE). In-between completing his Mathematics Degree and PGCE, he spent a year working in a Cambridge church. Before starting at Charterhouse he went back to Giggleswick and taught there for three years. His teaching utilises his love of puzzles and he frequently draws on these to enable pupils to develop thinking and problem solving skills. Outside School he is usually found either in church, baking cakes or dancing ballroom, folk or Morris. He and his wife attend several folk festivals a year and also perform with a Morris dancing side in varying locations across England.  In the Maths department he oversees the Oxbridge preparations and also the School's participation in the Senior Team Maths Challenge - a national competition in which the School is developing a good history of performance.  He is currently a House Tutor in Verites and has spent time as Assistant Housemaster/Warden in Verites and Chetwynd respectively.  He is involved with cricket, fencing, chess, and Remove Pioneers alongside running, fencing and the baking project.

Mr Richard Peacock, BSc 

Mr Peacock joined Charterhouse from Cheltenham College where he taught for seven years. He was educated at Homewood School in Kent before attending the University of Bristol. He worked as a Chartered Management Accountant in the financial services sector before deciding on a career change into teaching. Mr Peacock completed his PGCE in Mathematics at the University of Bath in 2010. His interests include cycle touring, mountain biking and snowboarding; he has been involved in Duke of Edinburgh and is a trained Mountain Leader. He also enjoys football and tennis.

Mr Ed Reid, MMath

Ed Reid took up the post of Housemaster in Verites in September 2015. Ed is an Old Carthusian (g 1989-1994) who read Mathematics at Christ Church, Oxford, where he was awarded a First. He taught at Radley for three years, during which time he was a resident Assistant Housemaster and Master in charge of Racquets. He returned to Charterhouse as a teacher in 2001; since then he has held various positions, including Master of the Yearlings and Master of the Under School. Ed also runs the Christian Union and coaches football, hockey and tennis. He is married to Jean and they have two young children. As well as his sporting interests, Ed enjoys reading, music and theatre and is an active member of Binscombe Church.

Mr Timothy Reynolds, MA, MSc

Following a Mathematics Degree at Oxford University, Mr Reynolds joined the Royal Navy as an Instructor Officer and subsequently specialised in meteorology and oceanography. He left the senior service after twenty three years to join the Mathematics Department at Charterhouse. He and his wife are joint Wardens of the Stainers Girls’ Hall of Residence and he is also Assistant Housemaster of the Daviesites Boarding House. He is extensively involved in co-curricular activities, especially tennis and football and he heads the Royal Navy section of the Combined Cadet Force. Mr Reynolds is also an examiner for the International Baccalaureate. 

Mrs Amanda Rusholme, BSc

Before joining Charterhouse, Mrs Rusholme taught at Prior’s Field School for nine years as Head of Mathematics. She was educated at Sutton High School for Girls before reading Mathematics at the University of Durham. Prior to teaching she worked as a management consultant with Deloitte, specialising in property investment.

Mr Binit Shah, BA, MMath

Mr Shah studied Mathematics at Trinity College, University of Cambridge. He worked in financial services for six years and commenced teaching at Charterhouse in 2015. His interests include computing, technology, football, hiking and photography.

Charterhouse Terminology

Video Collection

Latest Academic News