sharing score with students

Can someone give me easy, step by step instructions on how to share a composition?
I am a teacher who is having my students write compositions. I want them to be able to work on them at home as well as in my studio. All students have musescore compositions that I have saved to MY laptop. Now how do I get them to be able to open them at home and work on them from THEIR computer? Please??? Any help would be greatly appreciated!! Thank you!