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Welcome to Chesham Grammar School, an outstanding, co-educational school of over 1300 students.  CGS has a reputation for excellence.  We have high academic standards and superb examination results.

Almost all of our students progress to their first choice university including Oxford and Cambridge.  Our students will be the leaders of tomorrow and our aim is to ensure that they are well equipped for 21st century life.  We want them to be confident, articulate and optimistic as well as respectful, tolerant and compassionate.  Above all, we want them to be happy.

With best wishes Annmarie McNaney – Headteacher

Read more from the Headteacher


Outstanding colour school                      Leadership programme 2017              Ism gcse 2017 bronze black               Csw logo investors in careers cmyk

Latest News

what's happening at Chesham Grammar

Issue 3 of the Economics Magazine Posted Oct 6 - 2021

Issue 3 of the Economics Magazine

Latest Sports Round-up Posted Sep 30 - 2021

Latest Sports Round-up

Year 9 A Netball Fantastic first game of the season for the 9A netball team who dominated to beat Misborne 20-14   Senior B Netball Great (...
FOCGS Bag2School Collection Posted Sep 29 - 2021

FOCGS Bag2School Collection

Thank you to everyone who brought along bags to the Bag2School Collection. We had a fantastic response. Waiting on the total raised from Bag2School......
Jeans for Genes Day Posted Sep 17 - 2021

Jeans for Genes Day

Charity at CGS On Friday we have held the first of our charity days this year, with the students raising money for Jeans for Genes, a campaign w...
British Showjumping National Championships Posted Aug 1 - 2021

British Showjumping National Championships

Issy (Year 10) has qualified for the British Showjumping National Championships at Stoneleigh Park this month with her pony Opan. She qualified for t...
National Enterprise Final 2021! Posted Jul 16 - 2021

National Enterprise Final 2021!

Every year at CGS, Years 7 and 10 take part in the National Enterprise Challenge.  Due to the ongoing restrictions this year, the whole chal...