the staff turnover at TGS is a grave concern and can only reveal an unhappiness or dissatisfaction in the workplace, whatever that may be. And I agree with SDT85.
Also, whilst London is a transient place (whatever that may mean - it is not a bus station) our schools must foster stability; this includes the long-term employment of teaching staff. TGS is a great declaimer of the stability of the home environment; why cannot TGS provide (one could argue) a stable environment for The Child? I think that the "transient nature of London" (and is London really transient?) is the weakest possible argument for the consistent loss of great teachers at TGS; remember TGS is an expensive independent school. A school of this nature should be able to provide a secure, nurturing, respectful environment for teachers in which they can flourish and take root, especially a school listed as Montessori.
A good teacher is a beacon in a child's life and good teachers ensure strong support and love in the lives of our children and their future years, at any school - they light a way both ahead, and behind, shining a beam on the valuable history of The Child, strengthening what has been achieved in The Child's life, in spirit (most important) as well as in academics etc. My child cannot look back at any (principle) teacher in her/his history, for all have gone.....in the first year at school my child had 3 different key teachers; one has became a roaming teacher (?) and two brilliant ones, left after a very short period at the school.
A teacher's work is vital to the happiness and well being of The Child. The fact that TGS loses lots of staff every year will impact upon the (deep-rooted) happiness or ease and stability of every child, no matter how fluid and adaptable adults presume children to be.
Montessorimum9 - respectfully, you cannot possibly speak for the 1000's of parents who you presume to be happy - how on earth could you know? Do you also know of the many who are unhappy, or have doubts? Are their doubts and concerns heard and would you have heard them? Some parents you speak of may be happy, are undoubtedly happy. Many appear not to have been or indeed, be? This is concerning - such inconsistency of experience.
How happy are the teachers? I ask this question for any answers? This would be very tricky to ascertain....no? Further, all institutions, however good (or bad) have room for improvement - is there really nothing at all you Montessorimum9 would change about the school? I find your standpoint incredible, with respect.
The school is still relatively young; there appears from this thread to be a body that grows in number who have serious grievances and are incredibly upset and angry....a disproportionate amount considering the young age of TGS, in my opinion.