This section compares the countries and economies on the basis of PISA average mathematics scores. Additionally, compares the relative standing of countries with the most recent assessment in mathematics, major PISA domain – are presented. The country results are estimated because they are obtained from samples of students, rather than from all students, and they are obtained using a limited set of assessment tasks, not a population of all possible assessment tasks. When interpreting mean performance, only those differences among countries and economies that are statistically significant should be taken into account. Figure below shows each country’s/economy’s mean score and also for which groups of countries/economies the differences between the means are statistically significant. The figure below lists each participating country and their last three PISA results. The main aim is to clarify country’s achievement over the years. The values range from a high points for the par...