Teachers do not change every week, they usually stay with their groups until the end.

There could still be cases from time to time, though: teachers may fall sick or go on holiday, they may need time to be with their families or to take care of other personal commitments... In any case, reasons can be many, but decisions are not arbitrary, they always respond to a necessity. Since programmes, contents and materials are planned by the academic team, these will not be affected.

Obviously, if doing a private course, students can choose at the time of booking which teacher they want to have classes with (availability will most likely be limited, though).