https://en.wikipedia.org/wiki/Admission_to_the_bar_in_the_United_States#Admission_without_law_school
I don't know about the law school study (I think he does have the minimum, but could be wrong), but Mike will have no problems passing the bar exam itself. This is why Harvey was pushing for character references, because Mike will also need to pass a character review after the exam, which as of right now on the show, he won't.
hmm....I didn't know that.
however, if I recall, Mike doesn't have ANY law school experience. He got expelled from that college when he got caught taking LSATs and the Dean said he would make sure Mike doesn't get into Harvard Law.
the whole premise of the show is ( or was ) that Mike was a fraud who should not have been practicing law.
if Mike could have "read the law" in NY, he and Harvey could have pursued that route a long time ago instead of constantly breaking the laws ( like hacking into Harvard Law grade records ) to make Mike seem like a legit lawyer.
however, if certain states do not require students to have attended law school, but can "read the law" after studying under a practicing attorney, that may ultimately be the solution.
If Mike really wants to continue practicing law, then he and Rachel could move to one of those states and he could try to read the law to try to take the bar exam. Or else, go to a smaller, lesser known law school in a smaller state, study for real to be a lawyer while Rachel practices law, and then pass the bar.
Mike would not be practicing law in New York for a prestigious firm, nor would he have graduated from Harvard Law. but, that's just something he'd have to sacrifice if he really wants to pursue law and use law to help people, which is what he has always purported his intentions to be.
you don't need to work in a big city, at a prestigious firm, or have graduated from a top law school to actually do that.