Chinese students 4 years ahead of US students in math

Sticking with the topic of PISA scores, students in major Chinese cities are FOUR YEARS AHEAD of US students when it comes to math:

•  In 2018, 79 countries and economies participated, representing about 32 million 15-year-olds. 
• The 10% most disadvantaged students in Beijing-Shanghai-Jiangsu-Zhejiang (B-S-J-Z) or in Macao or Estonia… those students actually do as well or better than the average student in the US.

The good people at Psychology Today are panicking over this. Their topics of discussion?

1. Our funding model and how to make it equitable
2. Raising our teacher training and professional development standards
3. Having higher expectations and a growth mindset

The USA already spends an obscene amount on students. If Estonian students are kicking the crap out of students in the USA, money is not the problem. (The USA spends more on inner city schools than Estonia spends on its elite schools). 

In my admittedly non-researched opinion, there are numerous causes:

1. dysgenic reproduction, in which the more intelligent people produce fewer children
2. improper classroom environments (and assessment methods) for male students, combined with over-prescription of drugs like Ritalin
3. mass immigration, bringing in low IQ populations like Somalis and Afghans. China, Estonia and Singapore do not suffer from this problem.
4. blacks, who form 13% of the population, drag down the scores. We know from studies in Baltimore that very few black students are competent at math.
5. blacks also perpetrate a ton of classroom violence. Just ask the students in Philly who went on strike over just that issue.

This list is, of course, not exhaustive.

No amount of money is going to paper over issues that are ultimately racial in nature. China has a highly motivated, high IQ population without significant numbers of low IQ foreigners. The same is true of Estonia, Singapore, Korea and other homogeneous nations.