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Mathematics is an art, a science, a skill and as such mathematics at CGS gives all our pupils an intellectual challenge that stimulates and extends their potential whatever their aptitude or interests.

Our well qualified team of mathematics teachers will ensure that your child will find enjoyment and fulfilment in their study of mathematics at CGS. We look forward to meeting them all.

Mathematics at Chesham Grammar School is about working with individuals to develop in each the skills and confidence to use and enjoy the subject to whichever level best suits their needs and potential. Students can expect to be challenged while also being nurtured and encouraged to achieve their very best. The department consistently achieves excellent examination results.

Key Stage 3

The requirements of the National Curriculum govern the topics studied in key stage 3. Here at CGS we additionally look to embed the skills of good mathematical communication. The focus is always on allowing each individual to work at the pace best suited to their current needs, and in order to aid this pupils are banded from Year 8.


In key stage 4 pupils are divided into ability sets with all pupils studying to sit the higher tier GCSE papers in the summer of Year 11.  The pace of working is tailored by our specialist mathematics teachers to promote the ability of each set; the most able are typically entered for an additional qualification as a further challenge. 

A level

AS or A level mathematics is a popular subject for up to 50% of our sixth form.  The OCR examination board (MEI) specification is followed. MEI stands for Mathematics in Education and Industry and the specification makes good links between all three. Further mathematics is an important choice for many of our high achievers and is a timetabled option each year.  


A level Mathematics:  Please see the Sixth Form section of our website: sixth-form-subject-information


Other Activities

Mathematics at CGS is not just confined to the classroom.  Individuals and teams are entered into the UK Maths Challenge at all levels.  Lecture visits take place to venues such as the Open University at Milton Keynes.  There is an annual Windsor Maths Trail when we visit that town to explore mathematics in action.