Signalong Indonesia (SI), a key word signing approach, was created to support the development of Indonesian inclusive schools. A mixed methods approach collected data about teacher's beliefs and experiences regarding SI from the first two schools to pilot it. Thirty-two teachers completed questionnaires, followed by interviews with nine teachers. Three themes emerged: understanding the nature of SI, the stigmatisation of signers and its reporting by teachers, and the nature of happiness in inclusive pedagogy. The latter reveals, for the first time, the importance of "Suka" as a culturally mediated intrinsic part of Indonesian inclusive pedagogy. The findings suggest recommendations about SI materials and training, and indicate a new research area regarding inclusive pedagogies within different cultures.