The importance of consistency and continuity in tuition

Having the same teacher is important. Regular changes of teachers and tutors are disconcerting because of the disruptive effects on the sessions and hence on the students. It takes time to build up rapport and for the tutor or teacher to earn the trust and confidence of  students, so having a succession of different tutors is a no-no for students. It also takes time for the teacher to help the students and to see results of that help.