Developments in forms of peer learning 1981–2006 are reviewed, focusing mainly on peer tutoring, cooperative learning, and peer assessment. Types and definitions of peer learning are explored, together with questions of implementation integrity and consequent effectiveness and cost‐effectiveness. Benefits to helpers are now emphasised at least as much as benefits to those helped. In this previously under‐theorised area, an integrated theoretical model of peer learning is now available. Peer learning has been extended in types and forms, in curriculum areas and in contexts of application beyond school. Engagement in helping now often encompasses all community members, including those with special needs. Social and emotional gains now attract as much interest as cognitive gains. Information technology is now often a major component in peer learning, operating in a variety of ways. Embedding and sustainability has improved, but further improvement is needed.

Peer assessment is an arrangement for learners to consider and specify the level, value, or quality of a product or performance of other equal-status learners. Products to be assessed can include writing, oral presentations, portfolios, test performance, or other skilled behaviors. Peer assessment can be summative or formative. A formative view is presented here, in which the intent is to help students help each other plan their learning, identify their strengths and weaknesses, target areas for remedial action, and develop metacognitive and other personal and professional skills. Peer feedback is available in greater volume and with greater immediacy than teacher feedback. A peer assessor with less skill at assessment but more time in which to do it can produce an assessment of equal reliability and validity to that of a teacher. This article describes effective approaches to peer assessment and encourages teachers to incorporate it into their practice.

In this systematic and critical review of purely school based child sexual abuse prevention program efficacy studies, 22 studies meeting the inclusion criteria differed by target population, program implementation, and evaluation methodology. Measured outcomes for children included knowledge, skills, emotion, risk perception, touch discrimination, reported response to actual threat or abuse, disclosure, maintenance of gains, and negative effects. Many studies had methodological limitations (e.g., sampling problems, lack of adequate control groups, lack of reliable and valid measures). However, most investigators claimed that their results showed significant impact in primary prevention (increasing all children’s knowledge or awareness and/or abuse prevention skills). There was little evidence of change in disclosure. There was limited follow-up evidence of actual use and effectiveness of prevention skills, and the evidence for maintenance of gains was mixed. Several programs reported some negative effects. Very few studies reported implementation fidelity data, and no study reported cost-effectiveness. Implications for future research, policy, and practice are outlined.