Lessons Unlimited maintains a three semester academic calendar with year round open enrollment. Tuition payment is due at the time of registration, prior to, or at the beginning of each semester. Our Fall and Spring sessions are structured semesters consisting each of an eighteen lesson commitment. Our Summer semester is typically a nine lesson commitment, however we have some flexibility with returning students to allow each family and their instructor to adjust the summer lesson schedule on a case by case basis in order to best accommodate various summer activities and family obligations. If you are joining us mid-fall or mid-spring semester we are happy to prorate tuition according to the number of lesson weeks left in the current semester at the time of your registration.