You can also see that there is a gap of almost three and a half school years between 15-year-olds in Shanghai and 15-year-olds in Chile, and the gap grows to seven school years when you include the countries with really poor performance.
Taip pat matyti beveik 3.5 mokslo metų tarpas tarp penkiolikmečių Šanchajuje ir penkiolikmečių Čilėje, ir ši atskirtis išauga iki 7 mokslo metų, jei įtraukiame šalis su tikrai prastais rodikliais.