Graduate students from China (in such humanities subjects as philosophy) derided the GRE main test mathematics section (used as one element of admission decisions for graduate schools in the United States) as a test of "junior high math," which it literally is in terms of the standard curriculum of urban schools in China. The GRE subject test in mathematics, used largely but not exclusively for admission into graduate programs in mathematics, actually has some undergraduate mathematics content, but the mathematics section of the general GRE includes only mathematics that any well educated person who completed secondary schooling ought to know.
FYI, most graduate students I know here in the US also consider the math section in the GRE to be a joke. But as a grad student in an engineering school I guess that's to be expected.
When I took the GRE, the hardest thing about the math test was having to remember long division, since we couldn't use calculators.
Honestly, math section of this 1869 test is still kind of joke for Chinese high school students. Getting full mark is easy for those well educated middle school students, say, up to about 30 percent won't be a overstated figure.