To see your teacher (past or present) in a dream suggests that you are seeking some advice, guidance, or knowledge. You are heading into a new path in life and are ready to learn by example or from a past experience.
The meaning of this dream depends on your own experiences with teachers or teaching and, of course, the circumstances in your dream.
The dream could be addressing your issues with authority and approval.
Also, you may have a need for guidance and new learning.
See Also: School