Dreaming of a classroom often symbolizes learning, personal growth, or a reflection of your current life experiences. The fact that the classroom looked different may indicate a change or transition you are experiencing in your life, perhaps related to your education or personal development.

The black door could represent the unknown or something hidden that you are curious about. It might suggest that you are exploring new aspects of yourself or your life that you have not confronted yet. The presence of Grant and Mya could symbolize relationships in your waking life, where Grant’s lack of action towards you might reflect feelings of distance or uncertainty in your relationship with him. Mya’s happiness at your choice to enter the room could indicate that she supports your exploration of new experiences or sides of yourself.

Overall, this dream may be encouraging you to embrace change and explore new opportunities, while also reflecting on your relationships with those around you. Consider what the black door represents for you personally and how it relates to your current life situation.