grades //

But with homework counting for no more than 10% of their grades, students can easily skip half their homework and see very little difference on their report cards.

但由于家庭作业在成绩中所占比例不超过10%，学生完全可以跳过一半的作业，而成绩单上的变化却微乎其微。

it is important for grades

这对成绩很重要

Their grades are lower and their dropout rates are higher.

他们的成绩较低，退学率也更高。

But the article is actually quite optimistic, as it outlines a potential solution to this problem, suggesting that an approach (which involves a one-hour, next-to-no-cost program) can close 63 percent of the achievement gap (measured by such factors as grades) between first-generation and other students.

但这篇文章实际上相当乐观，因为它概述了解决这一问题的潜在方案，提出一种方法（涉及一个几乎不花成本的一小时项目）可以缩小第一代大学生与其他学生之间63%的成就差距（以成绩等因素衡量）。

But now most colleges, save for many selective campuses, allow all undergraduates, and even graduate students, to get their low grades forgiven.

但现在，除了许多精英校园之外，大多数高校都允许所有本科生，甚至研究生，将他们的低分予以宽恕。