Full time MBA from good school will help but provides no guarantees. If you can present your work experience in a positive view, plus an MBA, you would stand fair chance.MBA is by no means essential for going into consulting but it can help get your foot in the door.Not sure that going in as graduate trainee is good idea with a few years work experience, depends on hom many years and what you did, but I think that after a couple of years you should try and go in a step higher.