My youngest is now near to graduating from college, and she can recognize how pathetic her high school prepared her for university study.
Getting kids out the door with a diploma is no biggie. Any state can do it if it's willing to degrade the product to a level where any nincompoop can pass the state graduaqtion exam.
We often considered homeschooling. Indeed, we did so with each child for the sixth grade only. That along with continual monitoring and frequent counter-teaching allowed our children to escape. Today, I cannot imagine how bad things are.
I homeschooled my son from 7th grade through high school. I totally agree with your assessment - public school is not being taught like it was when we were kids. I have a friend who moved to the Houston area (a nice suburb of) and was stunned to learn her daughter, who had been given straight A’s in a smaller school district in another part of Texas, was failing in this new school district. It wasn’t the move, it was the level of work expected. she went from an area with a larger “disadvantaged” population to one that was not. Schools teach to the lowest level.