Experiences of sexual prejudice threaten the quality of life and psychological well-being of sexual minority youth. The aim of this paper is to provide a comprehensive overview of how we developed a theory- and evidence-based sexual prejudice reduction program suitable for the Dutch high school context, guided by the intervention mapping approach (IM). In line with IM, six steps were followed: an initial needs assessment in which empirical, theoretical, and new data were gathered to acquire a thorough understanding of the problem (step 1); the formulation of program objectives for both students and teachers (step 2); the selection of theory-based methods and applications (step 3); program development (step 4); the provision of an adoption and implementation plan (step 5); and the development of an evaluation plan (step 6). In conclusion, developing a sexual prejudice reduction program for schools is a challenging but feasible process. IM is an effective tool for the systematic (theory- and evidence-driven) development of such a program.
Keywords: Adolescents; Homophobic bullying; Intervention mapping; School-based intervention; Sexual prejudice; Theory and evidence based.