Do you remember which or how much paperwork you took? J/W
I don't know if this is on time for you or not, but I do remember some of what I took!
- I had my acceptance letter from the school (just saying I was going to be a FT student, basically. Oh, and the dates, I think).
- Return ticket home (the immigration folks seemed to like that one)
- I also took a bank statement in case they questioned my ability to support myself, but they didn't ask for it.
I might have taken more, but I honestly don't remember. I know that every time I left and re-entered (I travelled quite a bit around Europe) I only took my student letter and my return ticket (well, copies) with me.
Hope that helps and that you have a great time!