You've no doubt heard about the MA bar association applicant who is suing because he claims a question on the test involving the marriage of a same-sex couple violated his right to exercise his religion. He's also claiming that his refusal to answer said question is what kept him from making a (barely) passing score on the exam.
Alot has been said already about this case (you can read more about it here, and here, and here, for instance), and we don't want to give this frivolous case much more airtime.
Other than to point out the obvious - the bar exam is a test of the applicant's knowledge of the law. And in Massachusetts, the law is equal marriage.