In Korean tradition, dreaming of a teacher is read as auspicious. It is most often tied to 학업, 직장.
A teacher is instruction and judgement. Praise was read as recognition; a scolding, a gap to fill; meeting an old mentor, a chance to learn.
Tradition reads the symbol as an omen; psychology reads the same dream as a mirror of your present state. Describe your dream and both readings appear together. Interpret your dream