Collective courses are held in classes consisting of a minimum of 5 to a maximum of 10 students. The school can complete the classes whose number of pupils is lower than expected, by enrolling students of the same level. The school reserves the right to cancel any course, change its schedule and change its prices and total number of hours based on alternative solutions offered to customers if the minimum number of participants is not reached. This means that, in the absence of the minimum number of enrolled in a collective course, the same will be transformed into an individual, semi-individual or mini- group less than one hour, corresponding to the commercial value of the collective course to which the students Were enrolled.