I sincerely hope you re-evaluate your choices.
To go to a lower-tiered b-school strictly for employment purpose is counter-intuitive. You're not going to gain much insight from the school because you had no professional experience. Your post-MBA job will be a similar one as that of an undergrad. Your return on investment is simply not worth it. And yes, there are schools that will no allow you to enroll for the fact that you have an MBA (such as Dartmouth Tuck, I believe). A lot of people think that they need an accounting position, or a banking position to get in top b-school and that's just not true. Any corporate job would be a stepping stone for top b-schools. At this point, just do your best and find a job, then work for several years, then consider an MBA. Also at this very point, you have had little life experience yet. Who knows? Maybe once you started working, your desire for MBA vanishes and instead, you want a Ph.D. You just never know.
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