Can the file make by 5.1.3 than used in 5.4.2?
Or make by 5.4.2 than used in 5.1.3?
Because my school is 5.1.3 but I want to download 5.4.2 in my computer.
I think a project created in an older version (5.1.3) of Unity can be updated to a newer version (5.4.2), but a project created/edited in a newer version of Unity won’t necessarily be compatible with older versions. I have successfully converted old projects to the newer versions of Unity, but I have not tried the other way around.
You could go to the Unity Download Archive and install 5.1.3 in a different folder, to use for school projects.