You should ask him how much revenue he’s expecting. Also, what’s the start up cost going to be? At 60% equity just know he maintains all operational control. Might be a good learning opportunity for you but he needs to share a lot more information with you. If he’s filing for bankruptcy at this stage in his life is he someone who will be a good mentor/partner?
Couple of thoughts. If this is a personal bankruptcy that he “has” to declare, how is he going to set up a new business prior to actually going through bankruptcy proceedings. Or is he just basically having his former business declare bankruptcy but not personally? These details are important.
If you’re going to drop out of school he should be able to provide you with some expectation of earnings. And if you’re doing most of the work there should be a salary prior to your 40% owner benefit. Lastly, keep doing online classes or something. If this doesn’t work out you don’t want to feel like you wasted a year or two of your time.