Recurring dreams often signify unresolved emotions or experiences from the past. In your case, dreaming of your elementary school halls filled with water could represent feelings of being overwhelmed or a sense of being trapped in certain situations or memories. Water is often associated with emotions, and the claustrophobic feeling suggests that you may feel constrained by these emotions or past experiences.

The school setting indicates a time of learning and growth, possibly relating to formative experiences from your childhood that still affect you today. The danger you sense might reflect anxiety about facing these unresolved feelings or situations in your current life.

Consider reflecting on any current stressors or unresolved issues that may tie back to your childhood. It might be helpful to explore these feelings further, perhaps through journaling or speaking with someone you trust. Understanding these emotions may help you navigate and eventually find a resolution, which could lead to a cessation of the recurring dream.