Wait, is it the child who is supposed to be reading aloud, or the parent? Having the child read aloud doesn't make much sense, because the skills for decoding and speaking are different than for comprehending. I can't imagine a child reading aloud for 30 minutes without being utterly exhausted, and still be able to relate what went on in the story. Having the adults read aloud makes so much more sense, because they will read books above the child's level, expanding vocabulary and concepts. But even still, before 30minutes are up I need a glass of water.

There's nothing like turning an enjoyable activity into "homework".