To determine which statement supports the idea that year-round school would help kids, let's analyze the information provided in the text.
The text suggests that during long summer vacations, kids often forget what they learned at school. On the other hand, with more frequent and shorter breaks during the year, kids are less likely to forget what they have learned. This indicates that shorter breaks throughout the year can help in retaining knowledge and skills compared to one long break during the summer.
Given this information, the statement that directly supports the idea that year-round school would help kids is:
3. During short breaks, kids won't forget what they learn.
This statement aligns with the argument presented in the text that more frequent breaks can aid in knowledge retention and ultimately contribute to students doing better in school.