This paper examines increasing privatisation of education in the province of British Columbia, Canada. Conceptually, the paper is informed by theories of privatisation and social justice; and methodologically, it uses policy analysis to examine documents and financial records obtained from government departments. The paper critically analyses education policy that has enabled the emergence of private sources of revenue (tuition fees and for-profit revenue) and the establishment of school and programme choice. Analysis of levels of international student tuition generated by school districts in the province reveals differential capacity to produce such revenue. The authors argue that this differential capacity is leading to the development of a fourth tier within a pre-existing three-tier K-12 education system in British Columbia. The article concludes with a discussion of implications related to social justice in education.