Staff training days, also known as In-Service Education and Training (INSET) days or professional development days, are days when students are not in school, but teachers attend for training or other professional activities.
You can check our school clusters list if you are not sure which cluster a school is in.
2025/2026 staff training days
Select a school cluster to find out when staff training days take place at schools in Denbighshire.
Denbigh cluster
Denbigh cluster
- 1 September 2025
- 2 September 2025
- 21 November 2025 (Except St Brigids)
- 5 January 2026
- 27 February 2026
- 20 July 2026
St. Brigid’s
- 1 September 2025
- 2 September 2025
- 5 January 2026
- 27 February 2026
- 13 April 2026
- 20 July 2026
Glan Clwyd cluster
Primary schools (except Ysgol Dewi Sant and Ysgol Henllan)
- 1 September 2025
- 24 October 2025
- 13 February 2026
- 13 March 2026
- 13 April 2026
- 20 July 2026
Ysgol Dewi Sant
- 1 September 2025
- 24 October 2025
- 13 February 2026
- 13 April 2026
- 12 June 2026
- 20 July 2026
Ysgol Henllan
- 1 September 2025
- 24 October 2025
- 13 February 2026
- 13 April 2026
- 12 June 2026
- 20 July 2026
Ysgol Glan Clwyd
- 1 September 2025
- 24 October 2025
- 13 February 2026
- 13 March 2026
- 13 April 2026
- 20 July 2026
Llangollen cluster
Primary schools
- 1 September 2025
- 2 September 2025
- 3 November 2025
- 5 January 2026
- 27 March 2026
- 20 July 2026
Ysgol Dinas Bran
- 1 September 2025
- 3 November 2025
- 5 January 2026
- 27 February 2026
- 27 March 2026
- 20 July 2026
Prestatyn cluster
- 1 September 2025
- 2 September 2025
- 5 January 2026
- 27 February 2026
- 13 April 2026
- 20 July 2026
Ysgol Penmorfa
Ysgol Penmorfa was closed on Thursday 9 October 2025 to allow staff to attend the funeral of a colleague. This closure replaced the staff training day originally planned for January 2026, meaning Ysgol Penmorfa will be open to pupils on Monday 5 January 2026.
Rhyl cluster
Most schools in the Rhyl cluster
- 1 September 2025
- 2 September 2025
- 5 January 2026
- 27 February 2026
- 13 April 2026
- 20 July 2026
Ysgol Plas Cefndy
- 1 September 2025
- 2 September 2025
- 3 November 2025
- 13 February 2026
- 27 March 2026
- 20 July 2026
Ruthin cluster
Primary schools
- 1 September 2025
- 2 September 2025
- 24 October 2025
- 5 January 2026
- 12 June 2026
- 20 July 2026
Ysgol Brynhyfryd
- 1 September 2025
- 2 September 2025
- 24 October 2025
- 5 January 2026
- 27 February 2026
- 20 July 2026
Ysgol Plas Cefndy
- 1 September 2025
- 2 September 2025
- 3 November 2025
- 13 February 2026
- 27 March 2026
- 20 July 2026
2026/2027 staff training days
Select a school cluster to find out when staff training days take place at schools in Denbighshire.
Denbigh cluster
All Denbigh cluster schools
- 1 September 2026
- 2 September 2026
- 27 November 2026
- 4 January 2027
- 5 April 2027
- 25 June 2027
Glan Clwyd cluster
All Glan Clwyd cluster schools except and Ysgol Henllan
- 1 September 2026
- 2 September 2026
- 23 October 2026
- 5 April 2027
- 19 July 2027
- 20 July 2027
Ysgol Henllan
- 1 September 2026
- 23 October 2026
- 5 April 2027
- 11 June 2027
- 19 July 2027
- 20 July 2027
Llangollen cluster
Primary schools
- 1 September 2026
- 2 September 2026
- 2 November 2026
- 4 January 2027
- 19 March 2027
- 7 June 2027
Ysgol Dinas Bran
- 1 September 2026
- 2 September 2026
- 2 November 2026
- 4 January 2027
- 19 March 2027
- 5 April 2027
Prestatyn cluster
Primary schools
- 1 September 2026
- 2 September 2026
- 4 January 2027
- 11 June 2027
- 19 July 2027
- 20 July 2027
Prestatyn High School
- 1 September 2026
- 2 September 2026
- 4 January 2027
- 5 April 2027
- 19 July 2027
- 20 July 2027
Rhyl cluster
All Rhyl cluster schools
- 1 September 2026
- 2 September 2026
- 2 November 2026
- 4 January 2027
- 30 April 2027
- 25 June 2027
Ruthin cluster
Most Ruthin cluster schools
- 1 September 2026
- 2 September 2026
- 4 January 2027
- 5 April 2027
- 19 July 2027
- 20 July 2027
Ysgol Plas Cefndy
- 1 September 2026
- 2 September 2026
- 18 December 2026
- 15 February 2027
- 19 July 2027
- 20 July 2027
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