Developing quality learning in inclusive schools is an essential issue for educators. Several aspects that need to be considered to create quality learning in inclusive schools are assessment, lesson planning, good classroom management, learning materials and media development, implementation of accessible education using appropriate technologies and evaluation. These aspects are essential parts that must be appropriately addressed to produce quality learning. This study uses a mixed explanatory sequential design. Quantitative research instruments were used to collect data from 100 teachers on teacher involvement in quality learning in inclusive schools. The results of this study describe the condition of teacher performance in inclusive schools in developing quality learning. Involvement and collaborative efforts between teachers appear below. In this case, knowledge is more of a differentiating factor determining who does what in the learning and design process, while the universal learning rules are still not being fully implemented. This condition may influence the quality of learning for students with disabilities. It is hoped that future research will examine teachers’ attitudes and increase their efforts in developing quality learning for students with disabilities. Moreover, the principles of implementing UDL need to be integrated into the inclusive education curriculum in Indonesia.