My PhD has two interlinked aims:

1. To produce methodological guidance for the utilisation of coproduction in the development of school-based health interventions. This will support researchers and members of the public in coproducing quality health interventions, and provide research funders and peer reviewers with criteria to assess the quality of coproduction in research bids.
2. To support students to coproduce substantive theories of how to tackle wellbeing in schools. The purpose is to compare the coproduced wellbeing theories with the current research evidence base, to see if stakeholders highlight theoretical gaps.

To achieve these aims, the objectives are to:

1. Conduct a realist review of previous studies of coproduced school-based health interventions to understand coproduction.
2. Conduct case study primary research with two secondary school cases that use coproduction to develop wellbeing interventions.

The research questions are:

1. What coproduction processes are currently utilised in school-based health intervention development?
2. What contextual factors and mechanisms are necessary for a successful coproduction process ?
3. What wellbeing targets and what processes of change do the coproduced interventions developed focus on?
4. Do the targets and processes of change highlight theoretical gaps in our understanding of wellbeing?