Kevin, a High-School Math Teacher, Claims That the U

Kevin, a high-school math teacher, claims that the U.S. educational system is performing better than has been portrayed in international studies. Which of the following arguments that he makes to support his position is not accurate?

A) The studies show that U.S. performance rates are now increasing rapidly and that in the last few years, we have raised our per-pupil expenditures to a level higher than those of all other industrialized nations.
B) Higher performance in math in other countries may be due more to family and cultural factors than to educational systems and practices.
C) Achievement in U.S. schools has improved during the past few decades, along with a growing enrollment of students from low-income families.
D) The performance of high-achieving students in the United States is similar to that of high performers in other nations.