According to the results of the Programme for International ...

[V@ndy87]

According to the results of the Programme for International Student Assessment (PISA), the countries with the highest and lowest problem-solving scores, respectively, among 15-year-olds are
 
  Greece and Iceland.
  Japan and United States.
  Austria and Italy.
  Finland and Tunisia.

Question 2

Scholars who study international differences in academic achievement agree that _____ is (are) far more responsible for academic differences than are cultural differences.
 
  school practices such as teaching
  the number of immigrants
  poverty
  geography

[elyse44]

Answer to Question 1

Finland and Tunisia.

Answer to Question 2

school practices such as teaching

[V@ndy87]

Thanks for the timely response, appreciate it

[xiazhe]

Excellent