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Privacy notice

In line with the EU General Data Protection Regulation (GDPR), we want to inform you how information will be processed in the evaluation of Stop and Think. In this privacy notice, we explain the legal basis for data processing, who will have access to participants’ personal data, how data will be used, stored and deleted, and who you can contact with a query or a complaint.

Who’s who?

This evaluation is being carried out by independent evaluators the National Centre for Social Research (NatCen), commissioned by the Education Endowment Foundation (EEF).

You can find out more about NatCen at

You can find out more about the EEF at

Who will access personal data?

NatCen are carrying out this evaluation and named individuals on the NatCen research team will have access to:

  • school and teachers’ names and contact details
  • audio recordings from pupil focus groups, teacher focus groups and teacher interviews
  • teacher survey responses
  • sample files provided by schools containing pupils’ names, dates of birth, gender, free school meal (FSM) eligibility and unique pupil numbers (UPNs) and the class they are in at school
  • pupil attainment and assessment data

McGowan Transcriptions ( is the transcription service NatCen use to transcribe our interview data. They will have access to recordings and transcripts from all interviews. McGowan Transcriptions is on NatCen’s approved supplier list, and is compliant with all our information security policies.

Formara Print ( is the printing company NatCen use. They will print documents containing pupil names, UPNs and dates of birth.

Experienced NatCen interviewers will visit schools to supervise pupil assessments. They will have access to pupil details only for the schools where they supervise assessments.   

How will the data be used?

The data collected will be used for research purposes only.

We will use data from pupil assessments and attainment data from the National Pupil Database (NPD) in our impact evaluation. We will compare results of children who do and do not take part in Stop and Think, to see whether the programme makes a difference to how well they do in maths and science. All assessment data will be pseudonymised before being analysed.

Information and opinions gathered from pupil focus groups, teacher focus groups, teacher interviews and teacher surveys will be used in our process evaluation to understand how the programme works in practice and what children and schools think of it. All responses will be pseudonymised before being analysed.

All data will be treated with the strictest confidence – no schools, teachers or pupils will be identified in any report arising from the research.

NatCen will share data from the impact evaluation (including information from the NPD) with academics at Birkbeck University for the purposes of further scientific study, with the Department for Education, and with the Office for National Statistics. It will also be stored in the EEF archive (managed by FFT Education) where other research teams can access it. Other research teams might match this data to other information from the NPD and other administrative data in the future.

NatCen will securely delete personal information about participants no more than six months after the evaluation is finished (by September 2023 at the latest).

The legal basis for processing data

For the duration of the evaluation, NatCen is a data controller who also processes data. This means we are responsible for deciding the purpose and legal basis for processing data. The legal basis is “legitimate interest”. This means we believe that: there is a genuine reason for us to process this data (to evaluate Stop and Think), this data is needed to fulfil this purpose (we couldn’t evaluate Stop and Think without this information) and using this data will not interfere with individuals’ interests, rights or freedoms.

After the evaluation ends, data from the impact evaluation will be stored in the EEF archive (as detailed above). At this point, EEF will become the data controller.

Who can I contact with a query or a complaint?

You have the right to raise any concerns with the Information Commissioner’s Office (ICO) via their website at

You also have the right to object to your child’s information being used in this evaluation. If you do not want your child’s information to be used, please email us via or call 020 7549 7190 during office hours.

Contact information

If you have any questions about the evaluation, including how personal information will be processed, please contact Padmini Iyer, Senior Researcher at NatCen, at