Shaangi,
I suspect that the answer to your questions depends on where you live. Some thoughts off the top of my head would be to talk to the local gifted school and find out how they handle transfers from out of the district that might not have these test scores. You can also check with the public school district to see if you have any rights to request the testingthrough them. A third possibility might be to contact your local homeschooling organization to see if these are tests that they administer to show adaquate yearly progress.

If I might ask, what is holding you back from the private testing?