Grassroots Efficacy Trial: Evaluation of an anti-conflict intervention by cluster randomised controlled trial

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN16027244

Enrollment

23000

Registered

2023-10-26

Start date

2023-06-01

Completion date

Unknown

Last updated

2023-11-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Improving school attendance through reduction of conflict and bullying behaviours in 11-14-year-old adolescents in secondary schools in England and Wales Not Applicable

Interventions

The Grassroots programme (adapted from ROOTS, Paluck et al., 2016) will be implemented in schools and randomised on a 1:1 basis. The randomisation procedure placed half of participating schools in eac

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Young people aged 11-14 years 2. Educated in participating mainstream state-funded secondary school within traveling distance of the designated recruitment regions (Greater London, South Wales, West Midlands, North-West England)

Exclusion criteria

Exclusion criteria: 1. Pupils attending schools outside the recruitment area 2. Pupils in year 6 or below 3. Pupils in year 10 or above

Design outcomes

Primary

Measure	Time frame
School attendance is measured as the percentage of school sessions attended in a term from the National Pupil Database (England) and SAIL databank (Wales) at baseline (Autumn term 2023), post-intervention (Summer term 2023), and 1 year (Autumn term 2025)	—

Secondary

Measure	Time frame
1. Bullying victimisation, cyberbullying victimisation, bullying perpetration and cyberbullying perpetration are measured using the four subscales of the Bullying and Cyberbullying Scale (for adolescents) at baseline and post-intervention 2. Aggressive behaviour is measured using the Peer Conflict Survey at baseline and post-intervention 3. Emotional symptoms, conduct problems, hyperactivity, peer relationship problems and prosocial behaviour are measured using the five subscales of the Strengths and Difficulties Questionnaire at baseline and post-intervention 4. Peer-to-peer incidents are measured by counting teachers’ disciplinary reports over a term at baseline (Autumn term 2023) and post-intervention (Summer term 2024) 5. Peer-to-peer conflict is measured using the descriptive and prescriptive norms survey at baseline and post-intervention 6. Feeling safe in school is measured using two survey questions at baseline and post-intervention	—

Measure

Time frame

1. Bullying victimisation, cyberbullying victimisation, bullying perpetration and cyberbullying perpetration are measured using the four subscales of the Bullying and Cyberbullying Scale (for adolescents) at baseline and post-intervention 2. Aggressive behaviour is measured using the Peer Conflict Survey at baseline and post-intervention 3. Emotional symptoms, conduct problems, hyperactivity, peer relationship problems and prosocial behaviour are measured using the five subscales of the Strengths and Difficulties Questionnaire at baseline and post-intervention 4. Peer-to-peer incidents are measured by counting teachers’ disciplinary reports over a term at baseline (Autumn term 2023) and post-intervention (Summer term 2024) 5. Peer-to-peer conflict is measured using the descriptive and prescriptive norms survey at baseline and post-intervention 6. Feeling safe in school is measured using two survey questions at baseline and post-intervention

—

Countries

England, United Kingdom, Wales

Contacts

Public ContactBecky Taylor

becky.taylor@ucl.ac.uk+44 (0)2076126604

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026