I totally disagree with you 100% on your perception of Thai education.
My Thai stepsisters legally emigrated to the USA, California, both were 19 and 18 years old, had received primary education and graduated high school in Bangkok, and had limited English skills.
They each enrolled in Community College. Their math courses, I'm not certain which level (i.e., Math 101, 105 or 107), were not up to par with the level of math they had recently learned in school.
Community College math was so easy for them, they each had to take the most advanced math offered by the college just to ensure their education went forward.
The each completed their C.C. studies and graduated from C.C.; beyond C.C. I don't know their academic resumes.
My sisters now work as a Q.A. Inspector for Thermal Fisher, and
as a logistics manager in the electronics industry, respectively.
I guess their Thai education had prepared them well for their continued education in the USA, which led to good career jobs.
I fail to see how their Thai education failed them, per your perception.