Yes, I did read that his daughter had good grades. Parents cannot trust public schools (or any schools). Parents need to make sure kids are where they should be academically.
This is from experience and a warning to all parents with kids in school is that you should not trust the school’s assessments. You need to be aware of what your kids are learning not just their grades.
I look at what books my high school son is reading, and then I ask him questions. He has an online math program that his school also uses for Algebra II, and I make sure he is where he should for that. I ask tons of questions about the courses.
This all came about from my 8 year old not be able to read where she was supposed to even though she had high grades. I was told by the school that there was nothing to be worried about. The school was wrong.