Have you ever predicted the future by seeing it in a dream first?

This happened to me yesterday, and it’s happened a few times before. For example, two nights ago I dreamed I just barely passed my science exam by one point. The next day I got the test back and it was exactly that!

I’ve also had dreams that have unfortunately predicted family members passing away (not violently), and within a few weeks their death was very surprising to the rest of my family. Actually, it was really surprising to me too, since I felt I saw it in my dream, but you know what I’m saying.

Has anything like this happened to you? Does anyone have a theory as to why/how it happens??