Re: How to assign 1 student to several courses?

I'm kinds in favor of the meta-course enrollment route.

1. Create one course for enrollment (call this the child course)
2. Create as many courses in which you wish the students enrolled (call these the parent courses)
3. Make the child course a meta-enrollment of all the parent courses.  When a student is enrolled in the child course they are automatically enrolled in all the parent courses.  

If you're a bit shy about the REALLY STUPID meta-course enrollment interface see MDL-27628 where I've posted a patch to fix the interface.