This paper updates and extends the analysis contained in the original Measuring Choice and Competition in Canadian Education (Clemens, Palacios, Loyers, and Fathers, 2014) and the previous edition of this study (Macleod and Hasan, 2017). The original study provided a general review of the existing research on school choice and competition, and data on current school enrolment by type of school by province. This was the first step in understanding the degree of school choice that is available to parents across Canada, as well as the level of competition between schools. The previous edition of this report contained enrolment data from the 2000–01 school year up until 2014–15. This version updates enrolment to 2019–20, the most recent year data is available from all provinces.