The Global Social Service Workforce Alliance and UNICEF have launched a technical note which summarises how violence against children and other child protection concerns can be addressed more effectively when social service workers are integrated into school structures. Since children spend a significant amount of time each day in school, school-based staff play a vital frontline role in identification and response. When appropriately capacitated, resourced and supported, social service workers located in or working with schools can play a major role in addressing concerns related to violence, abuse and neglect, mental health, and psychosocial well-being. This paper includes a review of evidence across the globe, and finds that teachers and school administrators usually have primary responsibility for reporting child protection concerns, but in many countries, they have neither the training and support, nor the time, to recognize signs and symptoms of abuse or violence, to record concerns, or to make referrals. A review of studies also finds that teachers in different contexts tend to under-report child abuse due to lack of knowledge about the signs and symptoms of abuse, unclear reporting procedures and fear of making inaccurate reports. While it is recommended that teacher and administrator training and support remain a central component of child protection within schools, child protection and well-being concerns can be addressed more effectively if the responsibility is shared with social workers, or others in the social service workforce. Properly trained and supported social service workers can work with teachers and administrators to establish an overall protective climate and culture in schools that is safe, non-violent and inclusive. They can provide intensive and specialized support for at-risk affected students. They can also connect interventions at school with the wider child protection system and effectively follow-up on child protection concerns when making external referrals and collaborating with other agencies and community actors.