# Free school meals, diet quality and food insecurity in secondary school students: protocol for a multiple-methods study – the CANTEEN study

## TL;DR

This study evaluates the effectiveness of free school meals in improving diet quality and reducing food insecurity among UK secondary school students.

## Contribution

The study introduces a multiple-methods approach to assess FSM policy effectiveness and potential policy changes in real-world school settings.

## Key findings

- The study will identify factors associated with FSM uptake in secondary schools.
- Multilevel modeling will evaluate FSM impact on diet quality and food insecurity.
- Economic evaluation will assess cost-effectiveness of FSM policy.

## Abstract

Food insecurity is increasing in the UK, impacting choice and diet quality. The current means-tested free school meals (FSM) policy was put in place to address dietary inequalities and food insecurity in school children. In secondary schools, approximately 20% of students who are eligible and registered do not take their FSM. Working across a range of schools that have variable levels of FSM uptake, this study aims to evaluate the effectiveness and cost-effectiveness of the current means-tested FSM policy in UK secondary schools on diet and food insecurity outcomes, understand what factors are associated with uptake and test the potential impact of any proposed policy change.

Secondary schools (n=32) in both Northern Ireland and the Midlands region of the UK are being recruited into the study. Data will be collected from school staff, governors, students and parents via questionnaires, as well as observational data of school eating environments. Qualitative data will be collected in selected case study schools (n=6–8). Multilevel modelling will be undertaken to evaluate the association between FSM uptake and fruit and vegetable intake, overall diet quality and food insecurity in all students. Economic evaluation will be conducted using a cost–utility approach. The effect of policy change will be modelled and school factors associated with FSM uptake explored using multiple methods.

Ethical approval has been obtained from Queen’s University Belfast Faculty of Medicine, Health and Life Sciences Research Ethical Committee (MHLS 23_55). Findings will be disseminated to key national and local agencies, to schools through reports and presentations, and to the public through media and open access publications.