Why?
I gave it a quick look so perhaps I missed some stuff, but the worst performance was Grade 11 math, where about 55% of students did not meet standards. But as someone who was great a math, and went to do it in Uni etc, I do not think its concerning that 60% of people do not know how to do matrices, calculus, or logic formalism or any of the other topics we touched in AP Math.
Valuing education is important, and I think we are behind the curve in how we teach our kids, tools like Google make tons of memorization so silly to prioritise. But kids not being up to speed with 17-18 year old metaphor understanding in English in a state with tons of immigrants, or kids not mastering calculus at 17 and not needing integrals later in life is part of specialisation, we cannot all do everything.