What percentage of kids finish their homework because they have to much?

There's no reliable data on the percentage of kids who finish their homework *because* they have too much. The relationship is complex and not directly measurable. While an overwhelming amount of homework might lead to some completion (out of a sense of obligation or fear of consequences), it's more likely to lead to rushed, low-quality work, procrastination, avoidance, and ultimately, incomplete assignments. Too much homework is generally associated with negative outcomes, not increased completion rates.