Peer Counselling and the Prevention of Drug Abuse among Secondary School Students: A Review of Theoretical and Empirical Evidence

Abstract

Drug abuse among secondary school students remains a persistent global and Nigerian public health and educational concern, with adolescents rendered particularly vulnerable by the developmental salience of peer influence during this life stage. Peer counselling, in which trained students provide guidance and support to fellow students, has been widely adopted by schools as a preventive strategy that harnesses positive peer influence rather than treating it solely as a risk factor. This paper undertakes an integrative review of the theoretical and empirical literature on the role of peer counselling in preventing drug abuse among secondary school students. The review is anchored in Bandura's social learning theory and Rosenstock's health belief model, which together explain how peer-modelled behaviour and risk perception shape adolescents' decisions about substance use. Empirical evidence is drawn from intervention and correlational studies conducted in Nigeria and internationally, including systematic reviews of school-based prevention programmes, to evaluate the effectiveness of peer-led approaches relative to adult-led alternatives. The review finds consistent, though not unqualified, support for the effectiveness of peer counselling and peer-led education in improving drug-related knowledge, strengthening resistance to peer pressure, and reducing risk behaviour, while also identifying structural constraints, including inadequate training of peer counsellors, weak supervision, and inconsistent institutional support, that limit programme effectiveness in many school settings. The paper concludes with recommendations for strengthening the design, training, supervision and institutionalisation of peer counselling programmes as a component of a comprehensive school-based drug abuse prevention strategy.