In terms of achievement tests, most standardized test already require the test be administered by someone other than a parent.
My homeschool support group has volunteer moms administer the standardized tests in a group setting for K-12. The moms are required to provide proof of a 4 year degree to be allowed to administer the tests. The moms also are not allowed to test in a class with one of their own children in attendance. Plus there is always a second mom in the room to act as an assistant to make sure the tests are administered according to the rules.
HSLDA is at the legal defense cutting edge for homeschoolers, and they will send out major warnings to their members to get on the phone and contact any/all Congressmen if necessary.
We do the same in our homeschool group as well. I would bet that the majority of homeschoolers do too. The idea that homeschoolers ‘cheat’ when testing their children is, disgusting
That's a pretty typical approach, but soon to be illegal in New Hampshire unless we can defeat HB 367. Apart from the inconvenience and expense of having to have a "credentialed educator" - i.e. a teacher administer the test, there is the even bigger issue of HB 367 repealing the existing, objective standards for approval of a student's progress. Right now in our state if you choose to use a standardized test, and if your child scores above the 40th percentile that is considered "adequate educational progress". Under the new law the local school superintendent gets to decide what he or she considers "adequate".
HSLDA is on the case, we'll all be working with them to defeat the bill.