Mr. Knowitall:

Emancipation is a coin that has two different faces.

First face (covered by statute in Missouri): Parent ACTIVELY trying to rid himself/herself of "child support" obligation owed to other spouse by asserting that minor child is emancipated.

Second face: Minor child seeking emancipation from parents.

Although "the law" is similar in both cases, it's not exactly the same -- or applied exactly the same in both instances. In sum, the party requesting the emancipation makes a difference (if not legally, then as a practical matter). The Randolph case involves the First Face noted above, not the second face.