Methods	Randomised controlled trial
Participants	71 seventh and eighth grade pupils in two schools 56% Male, ethnicity not reported
Location	Kentucky, United States
Interventions	Social Problem Solving Skills Training. Framed in a cognitive behavioural model, the intervention “taught children problem solving skills using modelling, guided practice or applied practice”. It is a manualised intervention of 27 lessons.
Programme deliverer	Two school psychologists, one of them the evaluator
Evaluator role	Delivered the programme
Outcomes	Social and academic competency Self‐concept In‐school and out‐of‐school suspension Disciplinary referrals School tardies
Length of intervention	30 weeks
Assessment	Baseline, post treatment (immediately after intervention) and follow‐up (18 months later)
Attrition	One students missed at post test 43% at follow up
COI statement	Not presented
CoFI	Possible. Researcher seems to be involved in programme development (p. 42) and also delivered part of the intervention (p.53‐4)