When I first started homeschooling in Oregon 17 years ago, we had to register and test every year and file the test results with the Educational Service District.
Then they changed it to test every other year, then on the same schedule as the public schools.
We are now supposed to keep the scores “available” rather than file them with ESD. The assumption is that they don’t want the records available to journalists or the public. If they don’t collect and collate them, then they don’t have the information to provide upon request. “Sorry, we don’t keep those records”.
HS were kicking the PS butts on statewide testing, makes for bad publicity when they want raise taxes “for the chilrun”.
I had a public school education. It was in New York City. Back when I was in school they really did provide an education. When I saw what my kids were being taught I laid into the teacher and asked what kind of cr*p was this?!! Big difference. Now it’s the home schooled kids who excel and are way out in front.