All names of participants were removed at the point of transcription, and recordings of discussions have also been deleted. However, it is possible that readers may be able to identify participants - or the children and colleagues they talked about- due to contextual information shared during the meetings. In order to minimise the risk that this might happen, the following processes were followed:
Transcripts
1. Participants were given an opportunity to remove any sections of the transcript for any reason, and not to disclose the reason, prior to analysis. A small number of sentences were redacted at this point.
2. In preparation for archiving, the transcripts were reviewed again by a member of the research team who removed any sections/words that:
- provided personal information about participants which could lead to identification  (e.g. ages of their own children);
- named places visited (for personal reasons or as a teacher);
- named programmes followed by the school (e.g. maths schemes, interventions);
- supplied contextual information about the school where they work (e.g. gender of head teacher, type of school);
- detailed any other specific dimensions of their professional context through which they might be identified;
- focused on individual children or colleagues. 
Postcards
1. Participants were given an opportunity to identify  any postcards that they did not want to be shared publicly (without giving a reason).
2. These postcards were deleted form the archived dataset.
3. Any other postcards that distinguished between children on grounds of ability were also removed- as this might also lead to identification.
4. Each postcard has a unique identification number - these do not, however, link to individual participants.