Inclusion of students with disabilities into regular schools is now one of the most significant issues facing the education community both nationally and internationally. In order to address this issue there is widespread acceptance that teacher training institutions must ensure that new teachers are trained to teach effectively in classrooms where there are students with a variety of learning needs. Utilizing a data set of 603 pre-service teachers from Australia, Canada, Hong Kong and Singapore this study reports the effects of training in inclusive education on pre-service teacher attitudes towards inclusion, their sentiments about people with a disability and their concerns about inclusion. The results are discussed in relation to a range of factors that could have produced different gains in their attitudes, sentiments and concerns among cohorts from different countries. (Contains 3 tables.)