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Term datesChislehurst and Sidcup Grammar School

Secondary • Sidcup • DA15 9AGLocal authority: Bexley

These are Chislehurst and Sidcup Grammar School's own term dates for 2026/27 — read from csgrammar.com. The school hasn't published 2025/26 and 2027/28 yet, so those years are filled from Bexley council's calendar: term dates and holidays, but not the school's own training days, usually five a year. Expect a few extra closed days. We re-check every few days and swap in the school's dates the moment they appear.

How we read these
  1. 1Opened the term-dates page on csgrammar.com.
  2. 2Read the dates off the page with our language model.
  3. 3Kept 17 dates of the school's own for 26/27; 25/26, 27/28 are Bexley council's dates until the school publishes its own — and we re-check every few days, so they stay right on their own.

See the full trace — every date, back to the sentence it came from →

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Summer Holiday now

Back to school Thu 3 Septin 7 days

First day off after that: Year 12 · Thu 3 Sept in 7 days

Days off · 2025/2026

Today

Summer Holiday

back to school Thu 3 Sept

Days off · 2026/2027

INSET Day

Year 12

check which year groups are in

Year 7

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Year group arrangement

check which year groups are in

in school · 6½ weeks

INSET Day

October Half Term

back to school Mon 2 Nov

in school · 7 weeks · last day Fri 18 Dec

Christmas Holiday

back to school Mon 4 Jan

in school · 6 weeks

February Half Term

back to school Mon 22 Feb

in school · 5 weeks · last day Thu 25 Mar

Easter Holiday

back to school Mon 12 Apr

in school · 3 weeks

Early May Bank Holiday

in school · 4 weeks

May Half Term

back to school Mon 7 Jun

in school · 6½ weeks

INSET Day

INSET Day

Summer Holiday

back to school Wed 1 Sept

in school · 7½ weeks

Days off · 2027/2028

October Half Term

back to school Mon 1 Nov

in school · 7 weeks · last day Fri 17 Dec

Christmas Holiday

back to school Tue 4 Jan

in school · 6 weeks

February Half Term

back to school Mon 21 Feb

in school · 6 weeks · last day Fri 31 Mar

Easter Holiday

back to school Tue 18 Apr

in school · 2 weeks

Early May Bank Holiday

in school · 4 weeks

May Half Term

back to school Mon 5 Jun

in school · 7 weeks · last day Fri 21 Jul

Summer Holiday

Chislehurst and Sidcup Grammar School term dates at a glance

When does Chislehurst and Sidcup Grammar School go back?
Chislehurst and Sidcup Grammar School returns on Thursday, 3 September 2026.
When does Chislehurst and Sidcup Grammar School break up for Summer?
Chislehurst and Sidcup Grammar School breaks up on Monday, 20 July 2026, the Summer Holiday runs from Tuesday, 21 July 2026 to Tuesday, 1 September 2026 and pupils return on Thursday, 3 September 2026.
When does Chislehurst and Sidcup Grammar School break up for October Half Term?
Chislehurst and Sidcup Grammar School breaks up on Thursday, 22 October 2026, the October Half Term runs from Friday, 23 October 2026 to Friday, 30 October 2026 and pupils return on Monday, 2 November 2026.
When does Chislehurst and Sidcup Grammar School break up for Christmas?
Chislehurst and Sidcup Grammar School breaks up on Friday, 18 December 2026, the Christmas Holiday runs from Monday, 21 December 2026 to Friday, 1 January 2027 and pupils return on Monday, 4 January 2027.

Checked against the school's own page on .