because I really don't know the circumstances, orlantina.
I do know the school, and it is an excellent school,
they certainly don't take predominantly privileged pupils, they certainly offer much support and booster classes to anyone not in line for top grades.
I've taken pupils who they have asked to leave, and in my experience, I have been surprised they were kept so long in a school with such a reputation for high achievement, when theses students had not developed into high achievers in any way.
On the other hand some of my students have applied there, and done brilliantly.
My own personal knowledge extends to two current students, one with an alcoholic father, living in very sparse circumstances, on free school meals, etc, and one with a mother in prison. Both boys doing fantastic, A*s all the way, amazing support at all times.
The number of students asked to leave is low, I can't comment, any further.