Received written offer today. $20/hr, no benefits, part time work. Basically they want me to work with them 1-2 days a week unless it's board meeting season or if I'm doing due diligence. Then I could keep my current job but I'm going to have to negotiate something to make it work. They also told me that in the unrealistic event that my current company just fires me after I tell them about this, that they would take me on full time at the same rate, at least until their summer intern starts in June, and then probably be bumped down to part time.
So this is good all around. If I negotiate properly with my current company I could actually be making MORE money doing both jobs!
Only realistic downside I can see is that once I tell my current company about it I'll also have to tell them about leaving for b-school in Fall 2015, which means they might not be interested in promoting me further.
Also, might have to work 50 hour weeks instead of my current 40. Shitty!