Methods	Randomised controlled trial
Participants	535 High school students 41% Male, 76% African‐American
Location	Chicago, United States.
Interventions	After School Matters (ASM) is a programme offering paid apprenticeship‐type experiences. Instructors provide information, guidance and feedback, and introduce students to the standards, language and culture of that line of work. The experience helps students begin to appreciate and adapt to the culture of the workplace and improve the “soft skills” increasingly demanded by employers. Intervention takes place in the host high school.
Programme deliverer	Instructor and school members
Evaluator role	Independent
Outcomes	Positive youth development   Marketable job skills   Academic outcomes   Problem behaviour   School suspension
Length	20 weeks
Assessment	Baseline and post treatment
Attrition	18%
COI statement	Not declared
CoFI	Unlikely. See acknowledgments section.