Parents have long had to contend with a growing number of children, who are reading at levels not seen in generations past.
In the past, the majority of children were reading at age 2 or 3.
But by the time they reached the age of 4 or 5, the average number of years of reading for children ages 4 and 5 had jumped to roughly 18.
At the same time, the number of hours per week spent in the classroom fell from about 2 hours per day to less than 1.
At age 5, a child spent about 7 hours per year reading, according to data from the U.S. Department of Education.
Today, many students who start school at age 4 or below are reading from age 5 to 7.
To help kids become more productive, schools across the country are introducing new curricula, such as early literacy, reading comprehension, and social skills.
Read more: The best ways to get children to school