well, bare in mind nursing degrees are different, most unis have a study abroad, but whether or not this can apply to nursing students is a different question, wth nursing its not just studying but also working.
If you will do it make sure you do it as an elective, so part of placement, theres no point going during holidays as there isn't enough time, oh and my cousins university had links with another so it was an exchange, all she had to pay for was flights and accomodation