What Grade Are Ladybugs?

She reveals their ages, stating that they are in the middle school and the ninth grade in the French dub. People have hypothesised that the reason they stated it in the English dub is because they are not using the grading systems used in American schools, but rather those used in the United Kingdom. Therefore, although Alya is referring to grade 10, in the United Kingdom, it is the same as grade 9 in the United States.