Effectiveness re-trial


As one of the Education Endowment Foundation’s ‘promising projects’, TDTS is currently the focus of a national effectiveness re-trial from 2021-24, which aims to see how the positive impact of the TDTS approach can be maintained at scale via a train-the-trainer programme.
The main trial will take place during the 2022-23 academic year in the following regions in England:

  • South West
  • Lancashire
  • Staffordshire / West Midlands
  • North East
  • Yorkshire
  • Lincolnshire / East Midlands

For more information about the trial, please see the documents below. The application window for schools to join has now closed, but if you have any questions about the trial please contact [email protected]

You can find also find out more by watching our presentation for schools here.




  • Recruitment brochure for schools 
  • Expression of Interest Form 
  • School Information Sheet   
  • Memorandum of Understanding for schools    

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