[racket] Is it possible to create a package without including source code?

 > In HEAD, you can do "raco pkg create --binary"

I need to distribute to students using vanilla 5.3.6.
Should I expect the binaries to be compatible?
Can I create a 5.3.6 binary package by hand somehow?

The problem I am actually trying to solve is to provide students with
some functionality without allowing them to see the source code.
Is there another way I should be thinking about achieving this outcome?


Norman