I dreamt that a classmate whom I loved at school was killed.

Dreams are often symbolic, so it's important to consider the context of the dream and the emotions it evoked. It's possible that this dream could be expressing a feeling of helplessness or loss in relation to a situation in your life. It could be that this classmate symbolizes something that you have lost in your life, such as a relationship, a job, or a sense of security. Alternatively, the dream could be expressing a sense of guilt or regret for not having done something differently in the past. It could also be that the dream is expressing a fear of loss, or a fear of something bad happening to someone you care about.

Whatever the dream is expressing, it's important to take the time to reflect on what it could mean and to take steps to address any underlying issues. It could be helpful to talk to a trusted friend or family member to gain a different perspective, or to seek professional help if needed. Taking the time to explore the emotions and thoughts associated with the dream can help to gain a better understanding of what it is trying to tell you.