Dreams involving schools often represent learning and personal growth, while a tub can symbolize a need for emotional cleansing or a desire to release negative feelings. The debris in the tub may indicate unresolved issues or clutter in your life that you're trying to sort through.

Sitting in the tub and finding it clean when you got out suggests a sense of renewal or clarity after confronting these issues. The presence you felt could represent your subconscious, a part of yourself that you may not fully understand or acknowledge.

Lighting candles is often associated with seeking guidance or illumination, but the breaking of the candles might symbolize frustrations in your attempts to gain clarity or control over your situation. Hiding under the covers can indicate a desire to escape or protect yourself from overwhelming feelings.

The entity placing its hand on you could signify a connection to your deeper emotions or fears. It might also represent an aspect of yourself that you are struggling to accept.

Overall, this dream suggests a journey of self-exploration, confronting emotional debris, and the challenges of seeking clarity in your life. It may be helpful to reflect on any current situations that evoke these feelings and consider ways to address them. Journaling or speaking with someone you trust about your experiences may provide additional insights.