I did skim over at the other thread, but I have no idea what the answer is. And the limited experience in our family doesn’t really qualify me to even surmise.
Both my girls were at a well-resourced K-12 private, and they learned math, both through the pandemic and afterward. My older one had Calc BC during Covid and did well, then went on to multivariable Calc. My D26 is currently in Calc BC. So it’s hard for me to imagine either getting through high school without knowing basic math.
My son, however, was at a special-ed private school during the pandemic, which was more focused on problematic behavior and less focused on actual education.
We ended up pulling him after freshman year and sending him to public school. (He’s got a lot of physical and cognitive challenges, so this was a leap of faith, and I was terrified.) He had already taken Algebra 1 and Geometry at the special-ed private school and done poorly, but he passed, so they wouldn’t let him retake those classes in public school. He then limped through Algebra 2 his sophomore year but did okay – ended with a B or something. He had a fantastic teacher, and both his sisters helped tutor him. (Thank goodness, because I don’t remember anything from high school math, lol.)
He then stubbornly decided to take Pre-calc, but a couple weeks in, admitted that he had no business being in that class. I pulled him and put him in AMDM (Advanced Math Decision Making) – which was basically consumer math. He did great in that class.
Currently he’s in his freshman year of college at an in-state public that attracts many underrepresented and economically disadvantaged students – and he’s in a basic math class that is offered online asynchronously. He’s passing (fingers crossed), but we have no illusions that he would be able to attend a more competitive college.
The only thing I can offer in terms of high schools and accountability is this – our local public school where my son attended had to adhere to strict state laws in terms of advancing kids. I begged and pleaded and talked to half a dozen administrators and even went up into school board levels to be allowed to enroll him in 9th grade when we moved him to public school – to no avail. I was told that he had already “started the clock” the previous year in private school, so he had to enroll as a sophomore. No matter that his academics weren’t at a 10th grade level.
I have lots of thoughts about this, but they’re outside the scope of this forum – and the problem is complicated and multi-faceted.