I don't want to tell the teacher what the postgraduate school says.

If you don't want to tell the teacher, you can just say a school. According to relevant public information, there is no need for postgraduate schools to tell teachers. If you don't want to tell the teacher, you can just say a school to prevaricate. National unified entrance examination for graduate students, referred to as "postgraduate entrance examination" and "unified examination". It refers to the general name of the relevant examinations organized by the education authorities and enrollment institutions for the selection of graduate students, and consists of the initial examination and re-examination organized by the national examination authorities and enrollment units. It is a selective examination, and the type of academic qualifications admitted is general higher education.