1. What do teachers think is the right amount of homework for first- to third-graders?
They should be doing 20 minutes or less each day.

2. In the U.S., what percentage of public elementary-school teachers count homework as part of a student's grade?
0.4

3. What percentage of families in the U.S. have rules about homework?
0.92

4. In the U.S., who spends more time on homework?
Girls

5. Eighth-graders from which country spend the most amount of time on homework?
United States