Yes I can only agree with Jane D response, i really feel you should make an appointment to talk about this with the school, something has obviously upset you. When i have spoken to teachersc/year leaders/headteacher in the past, i have recieved nothing but support from all parties invloved, not always the answers we want to hear! but to know the support is there is important.
I have been in the Middle East now for most of my childrens schooling & out of all schools, DESS is still in my mind right up there at the top of the A list.
I hope you find a way to solve your issues.