Background and Aim: Strategies to modify and adjust the educational setting in mainstream education for autistic students are under-researched. Hence, this review aims to identify qualitative research results of adaptation and modification strategies to support inclusive education for autistic students at school and classroom levels. Method: In this systematic review, four databases were searched. Following the preferred PRISMA approach, 108 studies met the inclusion criteria, and study characteristics were reported. Synthesis of key findings from included studies was conducted to provide a more comprehensive and holistic understanding. Main Contribution: This article provides insights into a complex area via aggregating findings from qualitative research a comprehensive understanding of the phenomena is presented. The results of the qualitative analysis indicate a focus on teachers' attitudes and students' social skills in research. Only 16 studies were at the classroom level, 89 were at the school level, and three studies were not categorized at either classroom or school level. A research gap was identified regarding studies focusing on the perspectives of autistic students, environmental adaptations to meet the students' sensitivity difficulties, and how to enhance the students' inclusion regarding content taught and knowledge development from a didactic perspective. Conclusions and Implications: Professional development that includes autism-specific understanding and strategies for adjusting and modifying to accommodate autistic students is essential. This conclusion may direct school leaders when implementing professional development programs. A special didactical perspective is needed to support teachers' understanding of challenges in instruction that autistic students may encounter.

The current study describes the design, implementation, and analysis of a professional development programme using a Lesson Study model to enhance awareness in preschool professionals regarding inclusive education for children with autism spectrum disorder. The mixed method approach included pre- and post-intervention questionnaires, audio-recordings of group seminars, and an interview. The results indicated an increase in autism awareness among the professionals, suggesting that professionals changed their practice as a result of the programme. This was particularly clear regarding making adjustments to the learning environment and taking measures to prevent challenging situations. In addition to describing the implementation of a professional development programme in a preschool, this paper emphasises the importance of appropriate conditions for such initiatives.

Using a mixed-methods intervention approach this study examined the impact and process of a professional development and whether it induces changes in attitudes and practices related to autism among preschool professionals. We assessed professionals’ understanding of autism and their inclusion skills using questionnaires, audio-recorded seminars, and interviews pre- and post-intervention. Professionals, autistic children, and their parents participated. The results indicate that professional development improved attitudes and inclusive practices related to autism as experienced by professionals and parents but not as evident by autistic children. We conclude that professional development is likely to improve preschool staff’s autism knowledge and skills that may be beneficial to create inclusive education and enhance equity and learning outcomes for autistic children. We discuss organizational prerequisites as decisive for the implementation of professional development.

We aimed to explore the experiences of teachers, autistic students and students' parents, before and after professional development intervention for teachers in primary school. The main participants were five autistic students aged 7–11 years in three primary schools (intervention schools), their parents and teachers. Five school contexts were studied, with three interventions and two comparisons. Data collected included questionnaires, student evaluations and recorded follow-up conversations. The results showed statistically significant changes among teachers pre- to postintervention at all three intervention schools; no differences were found at control schools. However, analyses of the case studies showed that parents and students did not experience changes at the same levels as teachers. Identified barriers to change included a lack of physical space, time to focus on each child, and resources. Professional development is effective in changing teachers' understanding and attitudes, but not enough to change classroom practice in the views of students and parents.