NY's Parsons, London, Paris, Tokyo, and get some real working experiences as an intern, assistant, they are the most valuable.

...I have heard of Arnhem's Fashion Institute offering a Postgraduate in Fashion with the emphasis in business ......

i believe parsons has a post-grad degree in fashion, which covers marketing, business etc.
good luck.

does anyone have any dirt on the paris fashion institute? i'm thinking of going there, if it has any kind of a reputation it'd be good to know

Paris Fashion Institute ?....not the most reknown institute to study fashion but it's ok if you want to be in Paris ......and if you really think and believe that Paris is 'revolutionary' in .... "Fashion'

PS.....before you invest so much money and effort in such an important decision...I personally would do this.....chose a really ...really good fashion academy...like St. Martin's...Antwerp... Arnhem...Parson...and then go to Paris to do some...'training' on how the business work...in a fashion house where you can really be involved !....and please do not waste your time...doing a placement by just....' making photocopies...serving coffee...or being the office boy '....because that is what many fashion houses in Paris will let you do!....no matter how talented you are....I known some guys did it...and at the end they could always say.... 'I worked at with....etc etc...' just for the prestige nothing else !!!.....Really ridiculous....:):):)....But if you manage to do some apprentice work at a small innovative fashion label that is even better and exciting !!

Ah !...and most important...if you know some French you'll have far better chances with .....' les petites mains'....at the ateliers ....they are the ones you really learn a lot from....:):)