Announcement /

A message from the Headteacher

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

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Latest News

what's happening at Chesham Grammar

Posted Aug 21 - 2025

GCSE Results 2025

Congratulations to Year 11 students at Chesham Grammar School! They have achieved impressive GCSE results this morning, with 23% of results awarded ...

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Posted Aug 20 - 2025

A-Level Results 2025

Year 13 students at Chesham Grammar School are celebrating, having achieved excellent A-Level results. Almost 60% of entries were graded A*/A ...

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Posted May 1 - 2025

Ofsted Inspection March 2025

Chesham Grammar School was inspected by Ofsted in early March 2025. The report has just been published and staff, students, parents and trustees...

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Posted Feb 27 - 2025

Character Education Award

We are delighted to announce that we have been awarded the Association for Character Education's Kite Mark. Two assessors visited the school...

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Posted Dec 17 - 2024

School League Tables

We were pleased to read that Chesham Grammar School has again been named in the Times/Sunday Times top 100 state secondary school and in the top 10 st...

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Posted Nov 11 - 2024

Act of Remembrance

On Monday 11th November we held our Act of Remembrance service. This is the only time in the year when the whole school gathers and the sig...

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Latest Events

what's coming up at a glance

4thSeptember

Years 7, 10 & 12 Return to School

4thSeptember

5thSeptember

8thSeptember

12thSeptember

17thSeptember

Year 8 PRE Trip: Fiddler on the Roof

18thSeptember

Open Morning

30thSeptember

Year 13 Geography Trip

6thOctober

Year 7 Outward Bound

7thOctober

Year 7 Outward Bound

13thOctober

Years 11 & 13 French Trip

14thOctober

Years 11 & 13 French Trip

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Latest Tweets

Congratulations to our Year 11s. They have achieved impressive GCSEs, with 23% of results awarded grade 9 and over two thirds grades 7-9. I am proud of and pleased for our students; their GCSE results are a reflection of their commitment and resilience. Well done!
Chesham Grammar School @CGSBucks
Well done to our Year 11s collecting their GCSE results today. We are very proud of your achievements!
Chesham Grammar School @CGSBucks
Good luck to our Year 11s receiving GCSE results tomorrow📚✨ You’ve got this! 🌟#GCSEResults #GoodLuck pic.twitter.com/NPAQf0oBRk
Chesham Grammar School @CGSBucks
Do you need a Tapetenwechsel? We still have a couple of days left until we ar back to school! #WordOfTheWeek #LernDeutsch #LearnGerman pic.twitter.com/K2EKTxhJs3
Chesham Grammar School @CGSBucks
#Y12 / #Y13, this may be a good starting point for a discussion with regards to Unit 3: Jugendkulturhttps://t.co/cpcCu9nmgP#KS5German #ALevelGerman #AQAGerman
Chesham Grammar School @CGSBucks
CGS alumna Emma Middleton, Class of 2016, explaining changes to Premier League football ahead of the start of the season tonight. 👏 👏 https://t.co/48kfAlEml6
Chesham Grammar School @CGSBucks
Our Year 13s achieved excellent A level results. Just under a quarter A*, almost 60% A*\A and 85% A*-B. Very proud of and delighted for them. Well done! Huge thanks to the staff for their hard work and to parents for their support. Wishing students well in life beyond CGS.
Chesham Grammar School @CGSBucks
Congratulations to our Year 13s collecting their A level results today. We are very proud of your achievements and delighted that your hard work has paid off.
Chesham Grammar School @CGSBucks
Wishing @CGSBucks students all the very best as you receive your A-Level results tomorrow. You’ve worked so hard and this is just the beginning of your next chapter. We are excited to see where you go next and can’t wait to welcome you back as Old Cheshamians! #Classof2025 pic.twitter.com/0yfcqrfxue
Chesham Grammar School @CGSBucks
All 3 teams have boarded the flight for home - I am sure they will all be excited to see you and share their adventures!
Chesham Grammar School @CGSBucks
This may be of interest for #Y12 and #Y13 students. Deadline 15th August. More info in link: https://t.co/9TVRJCXvtv#ALevelGerman #KS5German #AQAGerman pic.twitter.com/5GCBtlxGni
Chesham Grammar School @CGSBucks
Some further images of Team 2 on project pic.twitter.com/1Ghbg2A5pe
Chesham Grammar School @CGSBucks