Educational attainment refers to the highest level of education that an individual has completed. This chart categorizes the population living within the current view extent by their educational attainment.

Notice that while one attainment level appears to dominate certain regions, it doesn't necessarily mean it represents the majority of the population. In fact, as you explore most areas, you will find the predominant educational attainment makes up, just a fraction of the population due to the number of categories considered.