This study reports data from teachers in regular classrooms about their experiences of inclusion for 143 young children with disabilities. Children were recruited from early intervention programs and their experiences were tracked across 3 years, from a Preparatory year to Year 2 of school. Children's teachers rated the appropriateness of the child's placement in their classroom as high to very high. However, most teachers rated the resources and supports available to support inclusion as only adequate. Teachers perceived a range of benefits for the child, peers, and themselves from inclusion but also identified significant challenges, including time pressures and increased responsibilities, as well as various behavioural and developmental concerns that had an impact on all children's learning. Challenges identified deserve continued attention for successful inclusive practice.