I don’t remember if the teachers were all really monsters but what i do remember is that there were four main kids:one was a red head boy, a blond girl, a goth girl, and a boy who was black and i think he wore glasses. The red head boy wore his hat backwards. The blond girl wore her hair in a ponytail and i think her dress was pink. The cartoon was also dubbed in hindi. I do remember this one episode in pieces where there is a monster disguised as a teacher and you can only see his reflection as a monster and a teacher in the wheelchair and the blond girl try to expose him. I am pretty sure the school is supposed to be like a boarding school. I saw this show on cartoon network. The year was i think 2009 or 2008.