This monograph is one of APCEIU's EIU Best Practices Series, which aims to encourage educators, scholars, and activists to implement and share local initiatives on EIU. The Series No.56 introduces ‘the AFS Effect+ for the Classroom Programme’ which is launched in September 2020. The programme has engaged 150+ high-school teachers from Brazil, Colombia, and New Zealand who completed 20 hours of virtual teacher training, collaborated virtually with each other and piloted activities developed by AFS with their classrooms, reaching over 2,500 students. As a result of the programme, the AFS Effect+ for the Classroom: Toolkit for Educators is now available to teachers worldwide to use as a resource for teaching Active Global Citizenship & the SDGs for high school students. The toolkit is currently available in English, Spanish and Portuguese, and being disseminated through AFS Network Organizations which are present in 50+ countries.