A substitute teacher in a dream often represents a temporary presence or a lack of direction in one's life. This dream may reflect feelings of uncertainty or insecurity in a particular area or situation. It suggests that you may be faced with unfamiliar surroundings or having to navigate through unfamiliar territory. The presence of a substitute teacher can also symbolize adaptability and resourcefulness, as you may need to quickly adjust to changing circumstances or find alternative solutions. This dream could be a reminder to be open-minded and flexible in handling unexpected changes in your waking life.