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.
およそ3.5学年分の 学力差があることがわかります およそ3.5学年分の 学力差があることがわかります 成績が最下位層の国を含めると 差は７学年分に広がります 今日の経済社会へ乗り出す若者たちは