Alberta's focus on standardized exams keeps grade inflation in check, but can put Albertan high school students at a disadvantage relative to students in other provinces. However, Alberta has the highest standards in Canada and produces students who are among the best in international comparisons. By preventing grade inflation, Albertan high schools have been able to greatly ameliorate the problem of compressing students with different abilities into the same category (i.e. inflating grades so that a student in the 98th percentile, for example, cannot be distinguished from one in the 82nd percentile).