. >> most participating countries improved their performage perfoe united states fell flat. confusing to 19-year-old jenny jung. >> i don't get how like the americans can score solo in a national test. >> the high school senior attended six years in the united states and most of her education occurred in korea. a country that ranked in the top six. many students in korea used special t tutors outside of school. >> i learned better here not in korea because they expect you to know everything if you don't have a tutor you don't have the idea but here because you don't have that it's a starting point. >> what do you think should changes in the united states if you could improve if test scores. >> if we could raise the competitiveness and the high confidence we have it would be a great sinne sinne sin effect. >> we want to work through the tough issues and not give up. >> the confidence is it high in the united states the key to success fault falls with the eds themselves . >> take a look at how society respects and an how it chooses the teachers. >> i have been public we should