Methods	Clustered randomised controlled trial
Participants	626 sixth grade school students, nested in 27 classrooms 50.2% Male, 96% Black
Location	Richmond, Virginia, US
Interventions	Responding in Peaceful and Positive Ways (RIPP) is a universal violence prevention program. “The goal of RIPP is to increase adolescents’ capacity and motivation to respond to developmental challenges in ways that facilitate social skill acquisition and acceptance of personal responsibility” (p.452).
Programme deliverers	Prevention specialists
Evaluator role	Designed the programme
Outcomes	Disciplinary violations for violence In‐school suspensions Out‐of‐school suspensions Violent behaviour frequency Drug use frequency RIPP knowledge test Problem situation inventory Attitudes toward nonviolent behaviour Attitudes toward violent behaviour
Length	25 weeks
Assessment	Baseline, post‐treatment, six‐month follow up and 12‐months follow‐up.
Attrition	Yes. Attrition affected both groups. ITT analysis.
COI statement	Not declared
CoFI	Possible. See p. 452