Normally,you will be advised to have at least two years work experience because the courses of MBA program is highly related to real business experiences, which will help you to understand them more thouroughly, so...
There are certain schools which claim no reqiurements about W/E, but when it comes to application, it is whole another story.
I want to apply for MBA, while I just have some intern experiences. Maybe it is not proper for most people, but I just want to have a try. Thus can you tell me which schools do not very emphasize work experience?