Methods	Randomised controlled trial (randomisation of classrooms N=6)
Participants	126 seventh grade students. Mixed gender (percentages not given), 100% African‐American
Location	District of Columbia, United States
Interventions	Efficacy, DC is a mentoring programme aimed at motivating and assisting students to excel academically and socially.
Programme deliverers	Eight adult volunteer mentors
Evaluator role	Independent
Outcomes	Absenteeism School suspension Self‐esteem Academic achievements Attitudes towards learning
Duration	12 weeks
Assessment	Baseline and post‐treatment (immediately after the intervention)
Attrition	23%
COI statement	Not presented
CoFI	Unlikely. The study author is not the programme developer, collaborator with the programme developer or licence holder (p.110)