What might the United States do to improve their PISA scores in reading, math, and science?

How do the United States’ PISA scores compare to the other countries’ PISA scores?
Why do you think those countries scored higher? What factors played a role in their success?
What might the United States do to improve their PISA scores in reading, math, and science?
How do the United States attributes and customs of education compare to those of other countries?