Dreams involving violent events, especially those related to school shootings, can be quite distressing and often reflect deep-seated fears, anxieties, or unresolved emotions. In your dream, the presence of your ex and the act of patching things up suggests that you may be processing feelings of loss, trauma, or unresolved conflict related to that relationship.

The school setting can symbolize a place of learning and growth, which may indicate that you are still grappling with lessons from your past experiences with your ex. The violent act might represent feelings of betrayal or a fear of losing control over your emotions and relationships.

Patching things up at the end of the dream signifies a desire for closure or reconciliation, not necessarily with your ex but perhaps with the feelings you have surrounding that relationship. It may also indicate a longing for peace and resolution in your emotional life.

Consider reflecting on what aspects of this relationship you still feel connected to and what steps you can take to heal from the past. Journaling your thoughts or speaking with a trusted friend or therapist may provide further clarity and support in working through these feelings.