According to research, what action by parents of urban students will best support their children's achievement in school?

The reasoning behind selecting the action of parents checking that their children have completed their homework every night as the best support for urban students' achievement in school lies in the strong correlation between homework completion and academic performance. When parents actively ensure that their children are completing homework assignments, they reinforce the importance of education and responsibility, leading to improved understanding of the material and better grades.

This practice also encourages a routine that emphasizes time management and accountability. Research indicates that homework, when properly completed, can help reinforce classroom learning and solidify key concepts. Thus, this direct involvement can have a significant impact on students' academic success.

While attending school events, providing additional tutoring, and communicating with teachers are also valuable actions that parents can take to support their children's education, the act of checking homework completion tends to provide a more consistent and immediate reinforcement of academic effort and responsibility, which can lead to more tangible improvements in school performance.