We didn't prep beyond just reviewing the small packet the test company sent a few weeks before the test. I wanted dds to be familiar with the general directions and how to fill in bubbles on a scantron form (especially dd10 b/c she had never taken a test of that sort).

My dd10 didn't even want to do that much, so prep for her was really, really limited. Dd12, when she took it in 4th grade, felt that the prep materials they sent were not reflective of the actual difficulty of the test. i.e. -- she felt that it was harder than the prep booklet that came from the publisher.