Converting Mcworlds

So I made this map in Minecraft EDU, and I worked really hard on it. I really wanted to have it in Minecraft Win 10 so I could show my Xbox friends. When I saved the world on EDU, put it on Dropbox, downloaded it from Dropbox on my other computer, and opened the .Mcworld file on Minecraft Win 10, it said "Unable to import world: Unsupported file format."

I figured to would work because Minecraft EDU is older than current Minecraft. I need help. Please...