What does it mean to dream about teacher?
A teacher often stands for guidance, judgment, or a lesson you are working through, or for your own inner authority, rather than a literal person from school.
Four ways to read it
Each reading below comes from a named tradition and a cited source, so you can see where it came from and decide what fits your dream.
Freud
Freud would read a teacher as a figure of authority carried over from childhood, one who judges, approves, or withholds approval. He would look for the old feeling about being measured that the dream revives.
After Freud, The Interpretation of Dreams (Brill trans., 1913), public domain.Jung
Jung might see the teacher as a wise old man or guide figure, an image of inner knowledge and the call to grow. The figure often appears when some lesson in life is asking to be learned.
Jungian concept (our summary).Modern
Continuity ties a teacher to waking concerns about performance, being evaluated, or learning something new. Notice whether you feel guided or judged, since that usually mirrors a real situation.
Continuity hypothesis (our summary).Mythological
The mentor recurs throughout myth, the seasoned guide who trains the hero before the great task. The figure tends to embody hard-won knowledge passed to the one who is ready.
Rosmerta Publishing editorial synthesis (after Bulfinch; Brewer).