I think the ITBS that you can do in your own home, is not the current edition. I needed the version and year for our district paperwork and I recall the testing service saying something that that edition was the only one available to HSers. I thought the ITBS was an ok test but the way the test questions were worded was a bit tricky so I was glad I did some test prep. That was for 3rd grade so I don't know what the upper grades were like. I have a test prep book for the SAT/10 for 4th grade and 5th grade and my feeling is that it looks similar to the ITBS, but more straight forward. The SAT/10 is only a few years old.
I really think if you want placement information, something like the MAP test if it accomplishes what it purports to do, will give the info you need.
