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Editor鈥檚 note: This is an adapted excerpt from You, Your Child, and School: Navigate Your Way to the Best Education (Viking)鈥攖he latest book by author and speaker Sir Ken Robinson (co-authored with Lou Aronica), published in March. For years, Robinson has been known for his radical work on rekindling creativity and passion in schools, including three bestselling books (also with Aronica) on the topic. His TED Talk 鈥淒o Schools Kill Creativity?鈥� holds the record for the most-viewed TED talk of all time, with more than 50 million views. While Robinson鈥檚 latest book is geared toward parents, it also offers educators a window into the kinds of education concerns parents have for their children, including on the quality and quantity of homework.

The amount of homework young people are given varies a lot from school to school and from grade to grade. In some schools and grades, children have no homework at all. In others, they may have 18 hours or more of homework every week. In the United States, the accepted guideline, which is supported by both the National Education Association and the National Parent Teacher Association, is the 10-minute rule: Children should have no more than 10 minutes of homework each day for each grade reached. In 1st grade, children should have 10 minutes of daily homework; in 2nd grade, 20 minutes; and so on to the 12th grade, when on average they should have 120 minutes of homework each day, which is about 10 hours a week. It doesn鈥檛 always work out that way.

In 2013, the University of Phoenix College of Education commissioned a survey of how much homework teachers typically give their students. From kindergarten to 5th grade, it was just under three hours per week; from 6th to 8th grade, it was 3.2 hours; and from 9th to 12th grade, it was 3.5 hours.

There are two points to note. First, these are the amounts given by individual teachers. To estimate the total time children are expected to spend on homework, you need to multiply these hours by the number of teachers they work with. High school students who work with five teachers in different curriculum areas may find themselves with 17.5 hours or more of homework a week, which is the equivalent of a part-time job. The other factor is that these are teachers鈥� estimates of the time that homework should take. The time that individual children spend on it will be more or less than that, according to their abilities and interests. One child may casually dash off a piece of homework in half the time that another will spend laboring through in a cold sweat.

Do students have more homework these days than previous generations? Given all the variables, it鈥檚 difficult to say. Some studies suggest they do. In 2007, a study from the National Center for Education Statistics found that, on average, high school students spent around seven hours a week on homework. A similar study in 1994 put the average at less than five hours a week. Mind you, I [Robinson] was in high school in England in the 1960s and spent a lot more time than that鈥攖hough maybe that was to do with my own ability. One way of judging this is to look at how much homework your own children are given and compare it to what you had at the same age.

There鈥檚 also much debate about the value of homework. Supporters argue that it benefits children, teachers, and parents in several ways:

• Children learn to deepen their understanding of specific content, to cover content at their own pace, to become more independent learners, to develop problem-solving and time-management skills, and to relate what they learn in school to outside activities.

• Teachers can see how well their students understand the lessons; evaluate students鈥� individual progress, strengths, and weaknesses; and cover more content in class.

• Parents can engage practically in their children鈥檚 education, see firsthand what their children are being taught in school, and understand more clearly how they鈥檙e getting on鈥攚hat they find easy and what they struggle with in school.

Ashley Norris is assistant dean at the University of Phoenix College of Education. Commenting on her university鈥檚 survey, she says, 鈥淗omework helps build confidence, responsibility, and problem-solving skills that can set students up for success in high school, college, and in the workplace.鈥�

That may be so, but many parents find it difficult to help their children with subjects they鈥檝e not studied themselves for a long time, if at all. Families have busy lives, and it can be hard for parents to find time to help with homework alongside everything else they have to cope with. Norris is convinced it鈥檚 worth the effort, especially, she says, because in many schools, the nature of homework is changing. One influence is the growing popularity of the so-called flipped classroom.

In the stereotypical classroom, the teacher spends time in class presenting material to the students. Their homework consists of assignments based on that material. In the flipped classroom, the teacher provides the students with presentational materials鈥攙ideos, slides, lecture notes鈥攚hich the students review at home and then bring questions and ideas to school where they work on them collaboratively with the teacher and other students. As Norris notes, in this approach, homework extends the boundaries of the classroom and reframes how time in school can be used more productively, allowing students to 鈥渃ollaborate on learning, learn from each other, maybe critique [each other鈥檚 work], and share those experiences.鈥�

Even so, many parents and educators are increasingly concerned that homework, in whatever form it takes, is a bridge too far in the pressured lives of children and their families. It takes away from essential time for their children to relax and unwind after school, to play, to be young, and to be together as a family. On top of that, the benefits of homework are often asserted, but they鈥檙e not consistent, and they鈥檙e certainly not guaranteed.