Can parents/friends sit in on a lesson?
Parents and guardians are welcome to sit in on piano lessons. This can often be helpful, because they can remind the child student of points made during the lesson, and what and how to practise throughout the week. Sometimes, of course, children do not want a parent in the room during the lesson. There is certainly no pressure for parents or guardians to be in the studio room during lessons, although communication between teacher and parents on the student's progress is important.
Generally, friends are discouraged from sitting in on lessons, because they can be a distraction to the student. Exceptions to this would include those times a student wishes to perform a piece for their friend, in preparation for a recital or exam; or if the student's friend is interested in beginning lessons and wants to know what the process is like.