Though academic performance is determined largely by family inputs and students’ individual talents, other factors, such as the amount of school resources available to students, also play an important role, as do various other school inputs, such as teacher quality, class size, expenditure per pupil, and instruction time.
虽然家庭投入和学生的个体才华在很大程度上决定学习成绩，但其他因素（比方说学生享有的学校资源）和师资力量、班级规模、单位生源支出和教学时间等其他各类学校投入起到的作用同样重要。