Why do I pay a fix monthly amount for tuition when sometimes there are only 3 lessons in a month?

The amount of our monthly tuition is calculated based on the total classes per calendar year divided by 12 months. Hence, each monthly amount is an installment of the total yearly tuition. On one hand this simplifies our accounting process, one the other this method allows us to bill a fix amount to accounts which choose to automatically pay their bills with credit cards. Moreover, parents must realize that music study is a long-term investment of time and efforts. The result is not immediate. One to two years’ time is well worth spent to find out a student’s real interest and potential.