The first argument is that these schools’ achievements seem greater than they are. By selecting only the strongest students, critics claim, they ensure strong results, without having to add a lot of value.
第一种说法是这些学校的成绩并不像看上去那样突出。批评者称招收实力最强的学生确保公立学校成绩最好，但这并没有改变产生的附加值。