请出示你的wiki。美国排名第36位,表现低于经合组织的平均水平,数学只有481分。
The United States ranked 36th, performing below the OECD average in mathematics with 481 points, and a score indistinguishable from the average for reading and science.
http://www.cnn.com/2013/12/03/world/asia/pisa-education-study/