classes:  lecturer. I just graduated from school, so my knowledge is not deep, sometimes I am confused in the questions of students.  curriculum. I just graduated from school, so my knowledge is not deep, sometimes I am confused in the questions of students.  facility. I just graduated from school, so my knowledge is not deep, sometimes I am confused in the questions of students.  general. I just graduated from school, so my knowledge is not deep, sometimes I am confused in the questions of students.