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Welcome to Chesham Grammar School, an outstanding, co-educational school of over 1200 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

Alumni Newsletter Posted Jul 2 - 2020

Alumni Newsletter

Please click on the following link to catch up on the latest CGS Alumni newsletter
Enrichment Week & Chiltern Foodbank Posted Jul 2 - 2020

Enrichment Week & Chiltern Foodbank

This week is enrichment week at CGS and students are choosing from a myriad of activities such as: Virtual Performing Arts Orchestra Performance ...
FOCGS Prize Draw Posted May 13 - 2020

FOCGS Prize Draw

Dear Parents, We are currently left with very few fundraising opportunities between now and the end of the school year. This is particularly disappoi...
News from the CGS Table Tennis Centre Posted Apr 3 - 2020

News from the CGS Table Tennis Centre

Hi everyone As promised, Jon (our Head Coach) and I have been keeping ourselves busy pulling together recommended videos of table tennis drills and e...
CGS launch Aviva Crowdfunding Campaign Posted Mar 4 - 2020

CGS launch Aviva Crowdfunding Campaign

Today our students and staff's launched the Aviva crowdfunding campaign.  We hope to contribute to the battle against climate change and...
Open for registration! Chesham Grammar School's first ever F... Posted Feb 28 - 2020

Open for registration! Chesham Grammar School's first ever F...

Open for registration! Chesham Grammar School’s first ever Fun Run. The Friends of Chesham Grammar School are looking forward to welcoming yo...