This table shows the class numbers by level at Mother Tongue Language School

The table compares the number of students of classes by seven levels at the Mother Tongue Language School. It is clear that Intermediate class and Pre-intermediate class is much higher than other classes in the number of learners as appose to Proficiency class and Advanced class have the smallest number of students.
In terms of the over fifty student class, the most popular class is intermediate at 200 students, which is twice as popular as Pre-intermediate class, with 100 students. Ranked in third place is Elementary level class which the number of students is less than Pre-intermediate class by 10 students.
In the under fifty student class, there are twice as many students in Upper-intermediate class level as students in the Advanced class and Proficiency class, with 50 students and 25 students respectively (the number of students in those classes is the same). Finally, the least popular class is Beginner level, just 30 students.