There's dry elements of "the law" and, then, there is the "practice of law."

If both parents don't "oppose", then it can be easy to get them to "expressly consent" to the emancipation and to agree that it is in the child's "best interests" to have the petition for emancipation granted. One method I've used to get "express consent" is to point out to the parents that a properly "emancipated minor" qualifies as an "independent student" for purposes of college financial aid. As an "independent student," the student does not have to provide his/her parents financial information to FAFSA - the only income considered is the "emancipated minors'" income. As a result, the "emancipated minor" qualifies for MORE in Pell Grants (money that does not have to be repaid) than they otherwise might qualify for (if parental income was considered), scholarship money, and (if needed) the ability to borrow more in subsidized and un-subsidized student loans.